X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/b8be9132339289b4ca5e46e32cc098a0e38bdd05..c7fb0b9079c70dd906bf180d5eff5d1b65ec73c3:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 268bb8a4..cbae3bed 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,3113 @@ +2005-09-19 Akim Demaille + + * NEWS, configure.ac: Bump to 2.1a. + +2005-09-16 Paul Eggert + + * NEWS: Version 2.1. + + * NEWS: Remove notice of yytname change, since it was never in an + official release. + * data/glr.c (yydestroyGLRState): Rename local var to avoid shadowing + diagnostic. + * src/output.c (prepare): Likewise. + * data/lalr1.cc (YYERROR_VERBOSE_IF): New macro. + (yysyntax_error_): Use it to avoid GCC warning when YYERROR_VERBOSE + is not defined. This is an awful hack, but it's enough for now. + All callers changed. + * tests/glr-regression-at (make_value): Args are const pointers now, + to avoid GCC warning. + (Duplicated user destructor for lookahead): New test. Currently + skipped. It fails on my host but I'm not sure it'll always fail. + +2005-09-16 Akim Demaille + + * src/symtab.h (struct symbol): Declare the printer and destructor + as const, to avoid accidental calls to free. + (symbol_destructor_set, symbol_printer_set): Adjust. + * src/symtab.c: Adjust. + +2005-09-16 Akim Demaille + + * data/c.m4 (b4_token_enums): New. + (b4_token_defines): Rename as... + (b4_token_enums_defines): this. + (b4_token_defines): New, output only the #defines. + * data/yacc.c, data/glr.c: Adjust. + * data/lalr1.cc: Use b4_token_enums instead of b4_token_enums_defines. + * data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): Define + as default values. + +2005-09-16 Akim Demaille + + * data/lalr1.cc (yylex_): Remove, inline its code. + (yyreport_syntax_error_): Remove, replaced by... + (yysyntax_error_): this which returns a string and leaves to the + caller the call to the users' error function. + (yylooka_, yyilooka_, yylval, yylloc, yyerror_range_, yyval, yyloc): + Move from members of the parser object... + (yylooka, yyilooka, yylval, yylloc, yyerror_range, yyval, yyloc): + to local variables of the parse function. + +2005-09-16 Akim Demaille + + * doc/bison.texinfo (Calc++ Parser): Don't promote defining YYEOF + since it's in Bison's name space. + +2005-09-15 Paul Eggert + + * data/glr.c (yyresolveValue): Add default case to pacify + gcc -Wswitch-default. Problem reported by twlevo@xs4all.nl. + + * NEWS: Document when yyparse started to return 2. + * doc/bison.texinfo (Parser Function): Document when yyparse + returns 2. + + * data/lalr1.cc: Revert part of previous change, as it's incompatible. + (b4_filename_type): Renamed back from b4_file_name_type. All uses + changed. + (class position): file_name -> filename (reverting). All uses changed. + +2005-09-14 Paul Eggert + + * examples/calc++/Makefile.am ($(calc_sources_generated)): Don't + do anything if $@ exists. This reverts part of the 2005-07-07 + patch. + +2005-09-11 Paul Eggert + + * Makefile.am (EXTRA_DIST): Do not distribute REFERENCES; it + contains obsolete information and isn't worth distributing as a + separate file anyway. + * data/glr.c [defined YYSETJMP]: Don't include . + (YYJMP_BUF, YYSETJMP, YYLONGJMP) [!defined YYSETJMP]: New macros. + All uses of jmp_buf, setjmp, longjmp changed to use these instead. + (yyparse): Abort if user code uses longjmp to throw an unexpected + value. + +2005-09-09 Paul Eggert + + * data/c.m4 (b4_identification): Define YYBISON_VERSION. + Suggested by twlevo@xs4all.nl. + + * data/glr.c (YYCHK1): Do not assume YYE is in range. + This avoids a diagnostic from gcc -Wswitch-enum. + Problem reported by twlevo@xs4all.nl. + + * doc/bison.texinfo: Don't use "filename", as per GNU coding + standards. Use "file name" or "file" or "name", depending on + the context. + (Invocation): The output of "bison hack/foo.y" goes to foo.tab.c, + not to hack/foo.tab.c. + (Calc++ Top Level): 2nd arg of main is not const. + * data/glr.c: b4_filename -> b4_file_name. + * data/lalr1.cc: Likewise. Also, b4_filename_type -> b4_file_name_type. + All uses changed. + (class position): filename -> file_name. All uses changed. + * data/yacc.c: b4_filename -> b4_file_name. + * lib/bitset.h: filename -> file_name in local vars. + * lib/bitset_stats.c: Likewise. + * src/files.c: Likewise. + * src/scan-skel.l ("@output ".*\n): Likewise. + * src/files.c (file_name_split): Renamed from filename_split. + * src/muscle_tab.c (muscle_init): Output b4_file_name, not b4_filename. + +2005-09-08 Paul Eggert + + * lib/.cvsignore: Add pipe-safer.c, stdio--.h, unistd--.h, + to accommodate latest gnulib. + + * tests/glr-regression.at (Duplicate representation of merged trees): + Add casts to pacify g++. Problem reported by twlevo@xs4all.nl. + + * bootstrap: Add comment as to why the AM_LANGINFO_CODESET hack is + needed. + +2005-08-26 Paul Eggert + + * data/glr.c (yydestroyGLRState): Renamed from yydestroyStackItem. + All uses changed. Invoke user destructor after an error during a + split parse (trivial change from Joel E. Denny). + + * tests/glr-regression.at + (User destructor after an error during a split parse): New test case. + Problem reported by Joel E. Denny in: + http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00029.html + +2005-08-25 Paul Eggert + + * README-cvs: Give URLs for recommended tools. + Mention Gzip version problem, and bootstrapping issues. + Remove troubleshooting section, as it's somewhat obsolete. + + * bootstrap (no_cache): New var, to accommodate different wget + variants. Use it instead of '-C off'. Problem reported by + twlevo@xs4all.nl. + + * data/glr.c (yydestroyStackItem): New function. + (yyrecoverSyntaxError, yyreturn): Use it to improve quality of + debugging information. Problem reported by Joel E. Denny. + +2005-08-25 Akim Demaille + + * tests/local.at (AT_COMPILE_CXX): Pass $LINKS too. + +2005-08-24 Paul Eggert + + * data/glr.c (yyrecoverSyntaxError, yyreturn): + Don't invoke destructor on unresolved entries. + * tests/glr-regression.at + (User destructor for unresolved GLR semantic value): New test case. + Problem reported by Joel E. Denny in: + http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00016.html + +2005-08-21 Paul Eggert + + * lib/.cvsignore: Remove realloc.c, strncasecmp.c, xstrdup.c. + Add strnlen.c. + * m4/.cvsignore: Remove codeset.m4, gettext.m4, lib-ld.m4, + lib-prefix.m4, po.m4. + + * data/glr.c (yyreturn): Use "Cleanup:" rather than "Error:" + in yydestruct diagnostic, since it might not be an error. + Problem reported by Joel Denny near end of + . + * data/lalr1.cc (yyerturn): Likewise. + * data/yacc.c (yyreturn): Likewise. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Adjust to the above change. + + * src/files.c: Remove obsolete FIXME comment. + + * data/glr.c (YY_SYMBOL_PRINT): Append a newline, for consistency + with the other templates, and to fix bogus run-on messages such + as the one reported at the end of + . + All callers changed to avoid the newline. + (yyprocessOneStack): Output two lines rather than one, to accommodate + the above change. This changes the debug output format slightly. + + * data/glr.c (yyresolveValue): Fix redundant parse tree problem + reported by Joel E. Denny in + + (trivial change). + * tests/glr-regression.at (Duplicate representation of merged trees): + New test, from Joel E. Denny in: + . + * THANKS: Add Joel E. Denny. + + * configure.ac (AC_INIT): Bump to 2.0c. + +2005-07-24 Paul Eggert + + * NEWS: Version 2.0b. + + * Makefile.am (SUBDIRS): Put examples before tests, so that + "make check" doesn't finish with "All 1 tests passed". + + * tests/regression.at (Token definitions): Don't rely on + AT_PARSER_CHECK for data that contains backslashes. It currently + uses 'echo', and 'echo' isn't portable if its argument contains + backslashes. Problem found on OpenBSD 3.4. Also, do not assume + that the byte '\0xff' is not printable in the C locale; it is, + under OpenBSD 3.4 (!). Luckily, '\0x80' through '\0x9e' are + not printable, so use '\0x81' to test. + + * data/glr.c (YYOPTIONAL_LOC): Define even if it's not a recent + version of GCC, since the macro is used with non-GCC compilers. + + Fix core dump reported by Pablo De Napoli in + . + * tests/regression.at (Invalid inputs with {}): New test. + * src/parse-gram.y (token_name): Translate type before using + it as an index. + + * data/glr.c (ATTRIBUTE_UNUSED): Remove, since it infringes on + the user's name space. All uses changed to __attribute__ + ((__unused__)). + (yyFail, yyMemoryExhausted, yyreportAmbiguity): + Add __attribute__ ((__noreturn__)). + + * etc/clcommit: Remove. We weren't using it, and it failed + "make maintainer-distcheck". + * Makefile.maint: Merge from coreutils. + (CVS_LIST, CVS_LIST_EXCEPT): New macros. + (syntax-check-rules): Change list of rules as described below. + (sc_cast_of_alloca_return_value, sc_dd_max_sym_length): + (sc_file_system, sc_obsolete_symbols, sc_prohibit_atoi_atof): + (sc_prohibit_jm_in_m4, sc_root_tests, sc_tight_scope): + (sc_trailing_space): New rules. + (sc_xalloc_h_in_src): Remove. + (sc_cast_of_argument_to_free, sc_cast_of_x_alloc_return_value): + (sc_space_tab, sc_error_exit_success, sc_changelog): + (sc_system_h_headers, sc_sun_os_names, sc_unmarked_diagnostics): + (makefile-check, po-check, author_mark_check): + (makefile_path_separator_check, copyright-check): + Use grep -n, to make it easier to find violations. + Use CVS_LIST and CVS_LIST_EXCEPT. + (header_regexp, h_re): Remove. + (dd_c): New macro. + (sc_dd_max_sym_length, .re-list, news-date-check): New rules. + (my-distcheck): Use more-modern GCC flags. + (signatures, %.asc): Remove. + (rel-files, announcement): Remove signatures. + Restore old updating code, even though we don't use it, so + that we're the same as coreutils. + (alpha, beta, major): Depend on news-date-check. + Make the upload commands. + + * data/c.m4, data/lalr1.cc, data/yacc.c: Normalize white space. + * lib/abitset.h, lib/bbitset.h, lib/bitset.h: Likewise. + * lib/bitset_stats.c, lib/ebitset.h, lib/lbitset.c: Likewise. + * lib/libitset.h, lib/timevar.c, lib/vbitset.h: Likewise. + * src/Makefile.am, src/gram.c, src/muscle_tab.h: Likewise. + * src/parse-gram.y, src/system.h, src/tables.c, src/vcg.c: Likewise. + * src/vcg_defaults.h, tests/cxx-type.at, tests/existing.at: Likewise. + * tests/sets.at: Likewise. + + * data/m4sugar/m4sugar.m4: Sync from Autoconf, except that + we comment out the Autoconf version number. + * doc/bison.texinfo (Calc++ Scanner): Don't use atoi, as + it's error-prone and "make maintainer-distcheck" rejects it. + + * lib/subpipe.c: Include without checking for HAVE_FCNTL_H. + Indent calls to "error" to pacify "make maintainer-distcheck", + when the calls are not intended to be translated. + * m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't check for fcntl.h. + + * src/Makefile.am (DEFS): Use +=, to pacify + "make maintainer-distcheck". + (bison_SOURCES): Add scan-skel.h. + (sc_tight_scope): New rule, from coreutils. + + * src/files.c (src_extension, header_extension): + Now static, not extern. + * src/getargs.c (short_options): Likewise. + * src/muscle_tab.c (muscle_table): Likewise. + * src/parse-gram.y (current_class, current_type, current_prec): + Likewise. + * src/reader.c (grammar_end, previous_rule_end): Likewise. + * src/getargs.h: Redo comments to pacify "make maintainer-distcheck". + * src/main.c (main): Cast bindtextdomain and textdomain calls to + void, to avoid warning when NLS is disabled. + * src/output.c: Include scan-skel.h. + (scan_skel): Remove decl, since scan-skel.h does this. + (output_skeleton): + Indent calls to "error" to pacify "make maintainer-distcheck". + * src/print_graph.c: Don't include , as system.h does this. + * src/reader.h (gram_end, gram_lineno): New decls to pacify + "make maintainer-distcheck". + * src/scan-skel.l (skel_lex, skel_get_lineno, skel_get_in): + (skel_get_out, skel_get_leng, skel_get_text, skel_set_lineno): + (skel_set_in, skel_set_out, skel_get_debug, skel_set_debug): + (skel_lex_destroy, scan_skel): Move these decls to... + * src/scan-skel.h: New file. + * src/uniqstr.c (uniqstr_assert): + Indent calls to "error" to pacify "make maintainer-distcheck". + + * tests/Makefile.am ($(srcdir)/package.m4): Use $(VAR), + not @VAR@. + + * tests/torture.at: Revamp to avoid misuse of atoi that + "make maintainer-distcheck" complained about. + + * examples/extexi (message): Don't print a message more than once, + and omit line-number decoration that makes Emacs compile think + that informative messages are worth worrying about. + +2005-07-22 Paul Eggert + + * configure.ac: Update version number. + + * Makefile.am (SUBDIRS): Add examples; somehow this got removed + accidentally. + * examples/calc++/calc++-parser.yy: Remove from CVS, as it's + autogenerated by the maintainer. + * examples/calc++/.cvsignore: Add *.yy. + + * lib/bitset.c (bitset_alloc): Don't cast xcalloc result. + * lib/bitset_stats.c (bitset_stats_init): Likewise. + * lib/bitsetv.c (bitsetv_alloc): Likewise. + + * po/POTFILES.in: Add lib/xalloc-die.c; remove lib/xmalloc.c. + + * src/relation.c (relation_transpose): Rewrite to avoid bogus complaint + from maintainer-distcheck about casting the argument of 'free'. + + * NEWS: Mention recent yytname changes. + * THANKS: Add Anthony Heading, twlevo@xs4all.nl. + + * bootstrap: For translations that have not yet been upgraded to + the new runtime-po domain, prime the pump by extracting the + relevant strings from the obsolete translations. This code can be + removed once the bison-runtime domain has been translated by each + team. + + * src/scan-gram.l (.): Don't double-quote token names, + now that token names are already quoted. + + Fix problem reported by Anthony Heading. + * data/glr.c (YYTOKEN_TABLE): New macro. + (yytname): Define if YYTOKEN_TABLE. + * data/yacc.c (YYTOKEN_TABLE, yytname): Likewise. + * data/lalr1.cc (YYTOKEN_TABLE, yytname_): Likewise. + (YYERROR_VERBOSE): Define the same way the other skeletons do. + * src/output.c (prepare_symbols): Output token_table_flag. + +2005-07-21 Paul Eggert + + * data/glr.c (yyinitGLRStack, yyreturn): Don't call malloc + again if the first call fails. + + * data/glr.c (yytnamerr): New function. + (yyreportSyntaxError): Use it to dequote most string literals. + * data/lalr1.c (yytname_): Renamed from yyname_, for compatibility + with other skeletons. All uses changed. + (yytnameerr_): New function. + (yyreport_syntax_error): Use it to dequote most string literals. + * data/yacc.c (yytnamerr): New function. + (yyerrlab): Use it to decode most string literals. + * doc/bison.texinfo (Decl Summary, Calling Convention): + Clarify quoting convention of yytname. + * src/output.c (prepare_symbols): Quote all names. This undoes + the 2005-04-17 change, which is now accomplished (mostly) via + changes in the parsers as described above. + * tests/regression.at (Token definitions, Web2c Actions): + Undo most 2005-04-17 change here, too. + +2005-07-20 Paul Eggert + + Fix more problems reported by twlevo@xs4all.nl. + * tests/cxx-type.at: Don't pipe output of ./types through sed to + remove trailing spaces. This loses the exit status of ./types, + and isn't needed since ./types shouldn't be emitting trailing + spaces. + * data/glr.c (yyreturn): Don't pop stack if yyinitStateSet failed, + as the stack isn't valid in that case. + + * src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out): + (gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in): + (gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy): + Add declarations to pacify "gcc -Wmissing-prototypes" when flex 2.5.31 + is used. + * src/scan-skel.l (skel_get_lineno, skel_get_in, skel_get_out): + (skel_get_leng, skel_get_text, skel_set_lineno, skel_set_in): + (skel_set_out, skel_get_debug, skel_set_debug, skel_lex_destroy): + Likewise. + + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Work even with + overly-picky compilers that reject 'char *foo = "bar";'. + + * src/symtab.c (SYMBOL_ATTR_PRINT, symbol_print): Direct output + to FILE * parameter, not to stderr. This fixes a typo introduced + in the 2005-07-12 change. + + * lib/subpipe.c (create_subpipe): Rewrite slightly to avoid + warnings from GCC 4. + + * data/glr.c (yyexpandGLRStack, yyaddDeferredAction, yyexpandGLRStack): + (yyglrShiftDefer, yysplitStack): + Remove unused parameters b4_pure_formals. All uses changed. + (yyglrShift): Remove unused parameters b4_user_formals. + All uses changed. + (yyglrReduce): Removed unused parameter yylocp. All uses changed. + +2005-07-18 Paul Eggert + + Destructor cleanups and regularization among the three skeletons. + * NEWS: Document the behavior changes. + * data/glr.c (yyrecoverSyntaxError): Don't bother to pop the + stack before failing, as the cleanup code will do it for us now. + * data/lalr1.cc (yyerrlab): Likewise. + * data/glr.c (yyparse): Pop everything off the stack before + freeing it, so that destructors get called properly. + * data/lalr1.cc (yyreturn): Likewise. + * data/yacc.c (yyreturn): Pop and destroy the start symbol, too. + This is more consistent. + * doc/bison.texinfo (Destructor Decl): Mention more reasons + why destructors might be called. 1.875 -> 2.1. + (Destructor Decl, Decl Summary, Table of Symbols): + Some English-language cleanups for %destructor. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): + Add output line for destructor of start symbol. + * tests/calc.at (AT_CHECK_CALC): Add one to line counts, + because of that same extra output line. + + * NEWS: Document minor wording changes in diagnostics of + Bison-generated parsers. + * data/glr.c (yyMemoryExhausted): Renamed from yyStackOverflow. + Remove unused formals. All uses changed. + (yyreportAmbiguity): "ambiguity detected" -> "syntax is ambiguous". + (yyparse): Rename yyoverflowlab to yyexhaustedlab. + * data/yacc.c (yyparse): "parser stack overflow" -> "memory exhausted". + Rename yyoverflowab to yyexhaustedlab. + When memory exhaustion occurs during syntax-error reporting, + report it separately rather than in a single diagnostic; this + eases translation. + * doc/bison.texinfo (Memory Management): Renamed from Stack Overflow. + (Memory Exhausted): Renamed from Parser Stack Overflow. + Revamp wording slightly to prefer "memory exhaustion". + * tests/actions.at: "parser stack overflow" -> "memory exhausted". + + * data/c.m4 (b4_yysymprint_generate): Use YYFPRINTF, not fprintf. + + Add i18n support to the GLR skeleton. Partially fix the C++ + skeleton; a C++ expert needs to finish this. Remove debugging + msgids; there's little point to having them translated, since they + can be understood only by someone who can read the + (English-language) source code. + + Generate runtime-po/bison-runtime.pot automatically, so that we + don't have to worry about garbage getting in that file. We'll + make sure after the next official release that old msgids don't + get lost. See + . + + * runtime-po/Makefile.in.in, runtime-po/bison-runtime.pot: Remove. + Now auto-generated. + * PACKAGING: Don't claim that Gawk, GCC, Perl use this method yet. + Fix typos in explanations of the runtime file. + * bootstrap: Change gettext keyword from YYI18N to YY_. + Use standard Makefile.in.in in runtime-po, since we'll arrange + for backward-compatible bison-runtime.po files in a different way. + * data/glr.c (YY_): New macro, from yacc.c. + (yyuserAction, yyreportAmbiguity, yyreportSyntaxError, yyparse): + Translate messages intended for users. + (yyreportSyntaxError): Change "virtual memory" to "memory" to match + the wording in the other skeletons. We don't know that the memory + is virtual. + * data/lalr1.cc (YY_): Renamed from _. All uses changed. + Use same method that yacc.c uses. + Don't translate debugging messages. + (yy::yyreport_syntax_error): Put in a FIXME for the i18n stuff; + it doesn't work (yet), and requires C++ expertise to fix. + * data/yacc.c (YY_): Renamed from YY18N. All uses changed. + Move defn to a more logical place, to be consistent with other + skeletons. + Don't translate debugging messages. + Don't assume line numbers fit in unsigned int; use unsigned long fmts. + * doc/bison.texinfo: Mention . Change glibc cross reference + to gettext cross reference. Add indexing terms. Mention YYENABLE_NLS. + * runtime-po/POTFILES.in: Add data/glr.c, data/lalr1.cc. + + Fix yyerror / yylex test glitches noted by twlevo@xs4all.nl. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Have yyerror return + void, not int. + * tests/glr-regression.at (Badly Collapsed GLR States): + Likewise. + (Improper handling of embedded actions and dollar(-N) in GLR parsers): + yylex should return 0 at EOF rather than aborting. + + Improve tests for stack overflow in GLR parser. + Problem reported by twlevo@xs4all.nl. + * data/glr.c (struct yyGLRStack): Remove yyerrflag member. + All uses removed. + (yyStackOverflow): Just longjmp, but with value 2 so that caller + can handle the problem. + (YYCHK1): Use goto (a la yacc.c) rather than setting a flag. + (yyparse): New local variable yyresult to record the result. + Use result of setjmp to set it, rather than storing itinto + struct. + (yyDone): Remove label. + (yyacceptlab, yyabortlab, yyoverflowlab, yyreturn): New labels, + to mimic yacc.c. Do not discard lookahead if it's EOF (possible + if YYABORT is used). + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Exit with + yyparse status; put status > 1 into diagnostic. + Check that status==2 works. + * tests/calc.at, tests/cxx-type.at, tests/glr-regression.at: + Use exit status 3 for failure to open (which shouldn't happen). + +2005-07-17 Paul Eggert + + * tests/conflicts.at (%nonassoc and eof): Don't exit with status + 1 on syntax error; just let yyparse do its thing. + * tests/glr-regression.at (Badly Collapsed GLR States): Likewise. + * tests/torture.at (AT_DATA_STACK_TORTURE): Likewise. + (Exploding the Stack Size with Alloca): + (Exploding the Stack Size with Malloc): + Expect exit status 2, not 1, since the parser is supposed to blow + its stack. Problem reported by twlevo@xs4all.nl. + + * data/glr.c (yyparse): Don't assume that the initial calls + to YYMALLOC succeed; in that case, yyparse incorrectly returned 0. + Print a stack-overflow message and fail instead. + Initialize the line-number information before creating the stack, + so that the stack-overflow message can report line zero safely. + +2005-07-14 Paul Eggert + + Fix problems reported by twlevo@xs4all.nl. + * data/glr.c (YYSTACKEXPANDABLE): Don't define if already defined. + (yyuserMerge): Provide a default case if b4_mergers is empty. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Define YYSTACKEXPANDABLE. + * tests/glr-regression.at + (Improper handling of embedded actions and dollar(-N) in GLR parsers): + Add casts to pacify C++ compilers. + * tests/glr-regression.at (Improper merging of GLR delayed action + sets): Declare yylex before using it. + * tests/Makefile.am (maintainer-check-g++): Fix a stray + $(GXX) that escaped the renaming of GXX to CXX. Remove bogus + test for valgrind; valgrind is independent of g++. + (maintainer-check-posix): Add _POSIX2_VERSION=200112, to check + for compatibility with POSIX 1003.1-2001 (if running coreutils). + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Port to stricter C++. + Use a destructor, so that we can expand the stack. Change + YYSTYPE to char * so that we can free it. Cast result of malloc. + +2005-07-13 Paul Hilfinger + + * data/glr.c (yyuserAction): Fix uninitialized variable that caused + a valgrind failure. Problem reported by twlevo@xs4all.nl. + +2005-07-13 Paul Eggert + + * PACKAGING: New file, suggested by Bruno Haible and taken from + similar wording in gettext's PACKAGING file. + * NEWS: Mention PACKAGING. + * Makefile.am (EXTRA_DIST): Add PACKAGING. + +2005-07-12 Paul Eggert + + * NEWS: Document recent i18n improvements. + * bootstrap: Get runtime translations into runtime-po. + Create runtime-po files automatically, if possible. + * configure.ac: Invoke BISON_I18N, so that we eat our own dog food. + * data/yacc.c: Rewrite inclusion of so that ENABLE_NLS + does not infringe on the user's name space. + (YYENABLE_NLS): Renamed from ENABLE_BISON_NLS. + * doc/bison.texinfo (Internationalization): Revamp the English + and Texinfo syntax a bit, to try to make it clearer. + (Bison Options, Option Cross Key): Mention --print-localedir. + * m4/bison-i18n.m4 (BISON_I18N): Rename ENABLE_BISON_NLS to + YYENABLE_NLS. Quote a bit more. + * runtime-po/.cvsignore: New file. + * runtime-po/Makefile.in.in (mostlyclean): Remove *.old.pot. + * runtime-po/Rules-quot: Remove; now created by bootstrap. + * runtime-po/quot.sed: Likewise. + * runtime-po/boldquot.sed: Likewise. + * runtime-po/en@quot.header: Likewise. + * runtime-po/en@boldquot.header: Likewise. + * runtime-po/insert-header.sin: Likewise. + * runtime-po/remove-potcdate.sin: Likewise. + * runtime-po/Makevars: Likewise. + * runtime-po/LINGUAS: Likewise. + * runtime-po/de.po: Likewise; we will rely on the translation project + to maintain this, so "bootstrap" should get it. + * src/getarg.c (PRINT_LOCALEDIR_OPTION): Let the C compiler determine + its value. + * src/main.c (main): Bind the bison-runtime domain, too. + +2005-07-12 Bruno Haible + + * data/yacc.c: Include when NLS is enabled. + (YYI18N): Renamed from _. Use dgettext when NLS is enabled. + * po/POTFILES.in: Remove autogenerated file src/parse-gram.c. + * runtime-po: New directory. + * runtime-po/Makefile.in.in: New file, copied from po/, with modified + $(DOMAIN).pot-update rule, so that old messages are never dropped. + * runtime-po/Rules-quot: New file, copied from po/. + * runtime-po/quot.sed: Likewise. + * runtime-po/boldquot.sed: Likewise. + * runtime-po/en@quot.header: Likewise. + * runtime-po/en@boldquot.header: Likewise. + * runtime-po/insert-header.sin: Likewise. + * runtime-po/remove-potcdate.sin: Likewise. + * runtime-po/Makevars: New file. + * runtime-po/POTFILES.in: New file. + * runtime-po/LINGUAS: New file. + * runtime-po/bison-runtime.pot: New file. + * runtime-po/de.po: New file. + * m4/bison.m4: New file. + * Makefile.am (SUBDIRS): Add runtime-po. + (aclocaldir, aclocal_DATA): New variables. + * configure.ac: Add AC_CONFIG_FILES of runtime-po/Makefile.in. + Define aclocaldir. + * src/getargs.c (usage): Document --print-localedir option. + (PRINT_LOCALEDIR_OPTION): New enum item. + (long_options): Add --print-localedir option. + (getargs): Handle --print-localedir option. + * doc/bison.texinfo (Bison Parser): Remove paragraph about _(). + (Internationalization): New section. + +2005-07-12 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_print): Swap the arguments, + for consistency with the rest of the code. + * src/symlist.h, src/symlist.c (symbol_list_print): Ditto. + Add separators. + +2005-07-12 Akim Demaille + + * src/parse-gram.y: Use %printer instead of YYPRINT. + +2005-07-12 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_print): New. + * src/symlist.h, src/symlist.c (symbol_list_print): New. + * src/symlist.c (symbol_list_n_type_name_get): Report the culprit. + +2005-07-12 Akim Demaille + + * data/glr.c (b4_syncline): Fix (swap) the definitions of + b4_at_dollar and b4_dollar_dollar. + +2005-07-11 Paul Eggert + + * doc/bison.texinfo (Mystery Conflicts): Add reference to DeRemer + and Pennello's paper. + +2005-07-09 Paul Eggert + + * data/yacc.c (yyparse): Undo previous patch. Instead, + set yylsp[0] and yyvsp[0] only if the initial action + sets yylloc and yylval, respectively. + + * data/yacc.c (yyparse): In the initial action, set + yylsp[0] and yyvsp[0] rather than yylloc and yylval. + This avoids the use of undefined variables if the initial + action does not set yylloc and/or yylval. + +2005-07-07 Paul Eggert + + * examples/calc++/calc++-driver.cc, examples/calc++/calc++-driver.hh: + * examples/calc++/calc++-scanner.ll, examples/calc++/calc++.cc: + Remove from CVS. These files are automatically generated. + * examples/extexi: Clarify that this file is now part of Bison, + not GNU M4, and that it works with any POSIX-compatible Awk. + * examples/calc++/Makefile.am (run_extexi): Remove; not used. + ($(calc_extracted)): Renamed from $(calc_sources_extracted), + so that we also get calc++-parser.yy. Geneate it. + Use $(AWK), not gawk, since any conforming Awk will do. + Put comment before action, since older 'make' can't handle comment + in action. + $(BUILT_SOURCES): List all built sources, not just some of them. + $(MAINTAINERCLEANFILES): Remove *.stamp, and all built sources. + $($(srcdir)/calc++-parser.stamp): Work even if POSIXLY_CORRECT. + $($(calc_sources_generated)): Remove unnecessary test for existence + of target. (This had a shell syntax error anyway; a stray "x".) + (calc_extracted): List $(srcdir)/calc++-parser.yy, not + calc++-parser.yy. + * examples/.cvsignore, examples/calc++/.cvsignore: New files. + + * bootstrap (gnulib_modules): Add gettext, now that it's no longer + implied by the other modules. + +2005-07-06 Akim Demaille + + Bind examples/calc++ to the package. + * examples/calc++/Makefile: Remove, replaced by... + * examples/calc++/Makefile.am: ... this new file. + * examples/calc++/test: Remove input. + * examples/calc++/compile: Remove. + * examples/Makefile.am: New. + * configure.ac, Makefile.am: Adjust. + * doc/Makefile.am (clean-local): New, for more recent texi2dvis. + +2005-07-05 Paul Eggert + + * data/glr.c (yyFail): Drastically simplify; since the format argument + never had any % directives, we can simply pass it to yyerror. + (yyparse): Use "t a; a=b;" rather than "t a = b;" when a will + be modified later, as that is the usual style in glr.c. + Problems reported by Paul Hilfinger. + + Rewrite GLR parser to catch more buffer overrun, storage exhaustion, + and size overflow errors. + * data/glr.c: Include etc. after user prolog, not before, + in case the user prolog sets feature-test macros like _GNU_SOURCE. + (YYSIZEMAX): New macro. + (yystpcpy): New function, taken from yacc.c. + (struct yyGLRStack.yyspaceLeft): Now size_t, not int. + (yyinitGLRStack, yyfreeGLRstack): Remove unnecessary forward decls, + so that we don't have to maintain their signatures. + (yyFail): Check for buffer overflow, by using vsnprintf rather + than vsprintf. Allocate a bigger buffer if possible. + Report an error if buffer allocation fails. + (yyStackOverflow): New function. + (yyinitStateSet, yyinitGLRStack): Return a boolean indicating whether + the initialization was successful. It might fail if storage was + exhausted. + (yyexpandGLRStack): Add more checks for storage allocation failure. + Use yyStackOverflow to report failures. + (yymarkStackDeleted, yyglrShift, yyglrShiftDefer, yydoAction): + (yysplitStack, yyprocessOneStack, yyparse, yypstack): + Don't assume stack number fits in int. + (yysplitStack): Check for storage allocation failure. + (yysplitStack, yyprocessOneStack): Add pure_formals, so that we + can print diagnostics on storage allocation failure. All callers + changed. + (yyresolveValue): Use yybool for boolean. + (yyreportSyntaxError): Check for size-calculation overflow. + This code is taken from yacc.c. + (yyparse): Check for storage allocation errors when allocating + the initial stack. + +2005-07-05 Akim Demaille + + Extract calc++ from the documentation. + * doc/bison.texinfo (Calc++): Add the extraction marks. + * examples/extexi: New, from the aborted GNU Programming 2E. + Separate the different paragraph of a file with empty lines. + * examples/Makefile: Use it to extract the whole calc++ example. + +2005-06-24 Akim Demaille + + * doc/bison.texinfo (C++ Parser Interface): Use defcv to define + class typedefs. + +2005-06-22 Akim Demaille + + * doc/bison.texinfo (C++ Language Interface): First stab. + (C++ Parsers): Remove. + +2005-06-22 Akim Demaille + + * data/lalr1.cc (yylex_): Honor %lex-param. + +2005-06-22 Akim Demaille + + Start a set of simple examples. + * examples/calc++/Makefile, examples/calc++/calc++-driver.cc, + * examples/calc++/calc++-driver.hh, + * examples/calc++/calc++-parser.yy, + * examples/calc++/calc++-scanner.ll, examples/calc++/calc++.cc, + * examples/calc++/compile, examples/calc++/test: New. + +2005-06-09 Paul Eggert + + * data/yacc.c (malloc, free) [defined __cplusplus]: Wrap inside + extern "C" {}. This fixes a problem reported by Paul Hilfinger, + which stems from the 2005-05-27 patch. + +2005-06-06 Paul Hilfinger + + * data/glr.c: Modify treatment of unused parameters to permit use + of g++ (which doesn't allow __attribute__ ((unused)) for parameters). + +2005-05-30 Paul Eggert + + Fix infringement on user name space reported by Janos Zoltan Szabo. + * data/yacc.c (yyparse): strlen -> yystrlen. + +2005-05-30 Akim Demaille + + * data/lalr1.cc (_): New. + Translate the various messages. + +2005-05-27 Paul Eggert + + Fix infringement on user name space reported by Bruno Haible. + * data/yacc.c (YYSIZE_T): Define first, so that later decls can use it. + Prefer GCC's __SIZE_TYPE__ if available, so that we don't infringe on + the user's name space. + (alloca): Include to get it, if it's not built in. + (YYMALLOC, YYFREE): Define only if needed. + (malloc, free): Declare, but only if needed, as this infringes on + the user name space. + +2005-05-25 Paul Eggert + + Fix BeOS, FreeBSD, MacOS porting problems reported by Bruno Haible. + * lib/bitset.c (bitset_print): Don't assume size_t can be printed + with %d format. + * lib/ebitset.c (min, max): Undef before defining. + * lib/vbitset.c (min, max): Likewise. + * lib/subpipe.c (create_subpipe): Save local variables in case + vfork clobbers them. + +2005-05-24 Bruno Haible + + * tests/synclines.at (AT_SYNCLINES_COMPILE): Add support for the + error message syntax used by gcc-4.0. + +2005-05-23 Paul Eggert + + * README: Mention m4 1.4.3. Remove obsolete advice about + Sun Forte Developer 6 update 2, VMS, and MS-DOS. + + * bootstrap: Remove workaround for problem I encountered with + gettext 0.14.1; it seems to be fixed now. + +2005-05-22 Paul Eggert + + * NEWS: Version 2.0a. + + * src/files.c: Include "stdio-safer.h"; this fixes a typo in + the previous change. + + Various maintainer cleanups. + * .cvsignore: Add a.exe, a.out, b.out,, conf[0-9]*, confdefs*, + conftest*, for benefit of CVS commands run at the same time as + "configure". Add build-aux, since "bootstrap" now creates it and + its subfiles. + * Makefile.cfg (move_if_change): Remove. + * Makefile.maint: Remove the update stuff; we now use "bootstrap". + (ftp-gnu, www-gnu, move_if_change, local_updates, update): + (po_repo, do-po-update, po-update, wget_files, get-targets): + (config.guess-url_prefix, config.sub-url_prefix): + (ansi2knr.c-url_prefix, texinfo.tex-url_prefix): + (standards.texi-url_prefix, make-stds.texi-url_prefix, taget, url): + ($(get-targets), cvs-files, automake_repo, wget-update, cvs-update): + Remove. + * configure.ac (AC_CONFIG_AUX_DIR): Change from config to build-aux; + this is now the recommended name. + * config/.cvsignore: Remove config.guess, config.rpath, config.sub, + depcomp, install-sh, mdate-sh, missing, mkinstalldirs, texinfo.tex, + ylwrap. These files now go into build-aux. + * config/move-if-change: Remove. + * config/prev-version.txt: Bump from 1.75 to 2.0. + + * bootstrap: Add stdio-safer, unistd-safer modules. + Remove m4/glibc2.m4 (introduced by latest gnulib, but + we don't need it). + * lib/.cvsignore: Add dup-safer.c, fd-safer.c, + fopen-safer.c, stdio-safer.h, unistd-safer.h. + * lib/subpipe.c: Include "unistd-safer.h". + (create_subpipe): Make sure all the newly-created + file descriptors are > 2, so that diagnostics don't + get sent down them (which might cause Bison to hang, in theory). + * m4/.cvsignore: Add stdio-safer.m4, unistd-safer.m4. + * src/files.c (xfopen): Use fopen_safer, not fopen. + + * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Port + yesterday's yacc.c fix. + +2005-05-21 Paul Eggert + + * data/glr.c, data/lalr1.cc: Update copyright date. + + Fix a destructor bug reported by Wolfgang Spraul in + . + * data/yacc.c (yyabortlab): Don't call destructor, and + don't set yychar to EMPTY. + (yyoverflowlab): Don't call destructor. + (yyreturn): Call destructor, if yychar is neither YYEOF nor YYEMPTY. + * tests/calc.at (AT_CHECK_CALC): Expect one fewer output lines, + since we no longer output the message "discarding lookahead token + end of input ()". + +2005-05-20 Paul Hilfinger + + * data/glr.c (YY_SYMBOL_PRINT): Don't print newline at end to + fix a small glitch in debugging output. + (yyprocessOneStack, yyrecoverSyntaxError, yyparse): Print newline + after YY_SYMBOL_PRINT where needed. + + (struct yyGLRState): Add some comments. + (struct yySemanticOption): Add some comments. + (union yyGLRStackItem): Add comment. + + (yymergeOptionSets): Correct this to properly perform the union, + avoiding infinite reported by Michael Rosien. + Update comment. + + * tests/glr-regression.at: Add test for GLR merging error reported + by M. Rosien. + +2005-05-13 Paul Eggert + + * COPYING, ChangeLog, GNUmakefile, HACKING, Makefile.am, + Makefile.cfg, Makefile.maint, NEWS, README, README-alpha, + README-cvs, TODO, bootstrap, configure.ac, data/Makefile.am, + data/README, data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c, + data/m4sugar/m4sugar.m4, doc/Makefile.am, doc/bison.texinfo, + doc/fdl.texi, doc/gpl.texi, doc/refcard.tex, lib/Makefile.am, + lib/abitset.c, lib/abitset.h, lib/bbitset.h, lib/bitset.c, + lib/bitset.h, lib/bitset_stats.c, lib/bitset_stats.h, + lib/bitsetv-print.c, lib/bitsetv-print.h, lib/bitsetv.c, + lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/get-errno.c, + lib/get-errno.h, lib/lbitset.c, lib/lbitset.h, lib/libiberty.h, + lib/main.c, lib/subpipe.c, lib/subpipe.h, lib/timevar.c, + lib/timevar.def, lib/timevar.h, lib/vbitset.c, lib/vbitset.h, + lib/yyerror.c, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4, m4/timevar.m4, + m4/warning.m4, src/LR0.c, src/LR0.h, src/Makefile.am, src/assoc.c, + src/assoc.h, src/closure.c, src/closure.h, src/complain.c, + src/complain.h, src/conflicts.c, src/conflicts.h, src/derives.c, + src/derives.h, src/files.c, src/files.h, src/getargs.c, + src/getargs.h, src/gram.c, src/gram.h, src/lalr.c, src/lalr.h, + src/location.c, src/location.h, src/main.c, src/muscle_tab.c, + src/muscle_tab.h, src/nullable.c, src/nullable.h, src/output.c, + src/output.h, src/parse-gram.c, src/parse-gram.h, + src/parse-gram.y, src/print.c, src/print.h, src/print_graph.c, + src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c, + src/reduce.h, src/relation.c, src/relation.h, src/scan-gram.l, + src/scan-skel.l, src/state.c, src/state.h, src/symlist.c, + src/symlist.h, src/symtab.c, src/symtab.h, src/system.h, + src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h, + src/vcg.c, src/vcg.h, src/vcg_defaults.h, tests/Makefile.am, + tests/actions.at, tests/c++.at, tests/calc.at, tests/conflicts.at, + tests/cxx-type.at, tests/existing.at, tests/glr-regression.at, + tests/headers.at, tests/input.at, tests/local.at, tests/output.at, + tests/reduce.at, tests/regression.at, tests/sets.at, + tests/synclines.at, tests/testsuite.at, tests/torture.at: + Update FSF postal mail address. + +2005-05-11 Paul Eggert + + * tests/local.at (AT_COMPILE_CXX): Treat LDFLAGS like AT_COMPILE does. + Problem reported by Ralf Menzel. + +2005-05-01 Paul Eggert + + * tests/actions.at: Test that stack overflow invokes destructors. + From Marcus Holland-Moritz. + * data/yacc.c (yyerrlab): Move the code that destroys the stack + from here.... + (yyreturn): to here. That way, destructors are called properly + even if the stack overflows, or the user calls YYACCEPT or + YYABORT. Stack-overflow problem reported by Marcus Holland-Moritz. + (yyoverflowlab): Destroy the lookahead. + +2005-04-24 Paul Eggert + + * data/yacc.c (YYSTACK_ALLOC_MAXIMUM): Add more-descriptive comment. + +2005-04-17 Paul Eggert + + * NEWS: Bison-generated C parsers no longer quote literal strings + associated with tokens. + * src/output.c (prepare_symbols): Don't escape strings, + since users don't want to see C escapes. + * tests/calc.at (AT_CHECK_CALC): Adjust to lack of quotes + in diagnostics. + * tests/input.at (Torturing the Scanner): Likewise. + * tests/regression.at (Token definitions, Web2c Actions): Likewise. + +2005-04-16 Paul Eggert + + * tests/torture.at (AT_INCREASE_DATA_SIZE): Skip the test if + the data size is known to be too small and we can't increase it. + This works around an HP-UX 11.00 glitch reported by Andrew Benham. + +2005-04-15 Paul Eggert + + * src/parse-gram.y: Include quotearg.h. + (string_as_id): Quote $1 before using it as a key, since the + lexer no longer quotes it for us. + (string_content): Don't strip quotes, since lexer no longer + quotes it for us. + * src/scan-gram.l: Include quotearg.h. + ("\""): Omit quote. + ("'"): Quote symbol before using it as + a key, since the rest of the lexer doesn't quote it. + * src/symtab.c (symbol_get): Don't quote symbol; caller does it now. + * tests/regression.at (Token definitions): Check for backslashes + in token strings. + + * data/yacc.c (YYSTACK_ALLOC_MAXIMUM): New macro. + (YYSIZE_T): Define to unsigned long int when using an older compiler. + (yyparse): Revamp code to generate long syntax error message, to + make it easier to translate, and to avoid problems with arithmetic + overflow. Change "virtual memory" to "memory" in diagnostic, since + we don't know whether the memory is virtual. + +2005-04-13 Paul Eggert + + * NEWS: Bison-generated C parsers now use the _ macro to + translate strings. + * data/yacc.c (_) [!defined _]: New macro. + All English strings wrapped inside this macro. + * doc/bison.texinfo (Bison Parser): Document _. + * po/POTFILES.in: Include src/parse-gram.c, since it now + includes translateable strings that parse-gram.y doesn't. + +2005-04-12 Paul Eggert + + * src/symtab.c (symbol_make_alias): Call symbol_type_set, + reverting the 2004-10-11 change to this function. + (symbol_check_alias_consistency): Don't call symbol_type_set + if the type name is already correct. + * tests/input.at (Typed symbol aliases): New test, from Tim Van Holder. + +2005-03-25 Paul Eggert + + * tests/regression.at (Token definitions): Don't use a token named + c, as that generates a "#define c ..." that runs afoul of buggy + stdlib.h that uses the identifier c as a member of struct + drand48_data. Problem reported by Horst Wente. + +2005-03-21 Paul Eggert + + * bootstrap: Change translation URL from + http://www2.iro.umontreal.ca/~gnutra/po/maint/bison/ to + http://www.iro.umontreal.ca/translation/maint/bison/ to avoid + redirection glitches. Problem reported by twlevo@xs4all.nl. + +2005-03-20 Paul Eggert + + * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Don't put options + after operands; POSIX says this isn't portable for the c99 command. + +2005-03-18 Paul Eggert + + * tests/glr-regression.at (glr-regr2a.y): Try to dump core + immediately if a data overrun has occurred; this may help us track + down what may be a spurious failure on MacOS. + +2005-03-17 Paul Eggert + + Respond to problems reported by twlevo@xs4all.nl. + + * bootstrap: Use "trap - 0" rather than the unportable "trap 0". + + * src/vcg.h: Comment fix. + * src/vcg_defaults.h: Parenthesize macro bodies to make them safe. + (G_CMAX): Change to -1 instead of INT_MAX. + + * data/yacc.c (yyparse): Omit spaces before #line. + +2005-03-15 Paul Eggert + + * src/tables.c (state_number_to_vector_number): Put it inside an + "#if 0", since it's not currently used. Problem reported by + Roland McGrath. + +2005-03-06 Paul Eggert + + * src/output.c (escaped_output): Renamed from + escaped_file_name_output, since we now use it for symbol tags as + well. All uses changed. + (symbol_destructors_output, symbol_printers_output): + Escape symbol tags too. + Problem reported by Matyas Forstner in + . + + * src/muscle_tab.c (muscle_code_grow): Don't quote numbers; it's + not needed. + * src/output.c (user_actions_output, token_definitions_output, + symbol_destructors_output, symbol_printers_output): Likewise. + * src/reader.c (prologue_augment): Likewise. + * src/scan-gram.l (handle_action_dollar, handle_action_at): Likewise. + + * src/vcg.c (output_edge): Don't quote linestyle arg. + Problem reported by twlevo@xs4all.nl. + +2005-02-28 Paul Eggert + + * doc/bison.texinfo (Semantic Tokens): Fix scoping problem in + example, reported by Derek M Jones. Also, make the example even + more outrageous, to better illustrate how bad the problem is. + +2005-02-24 Paul Eggert + + * doc/bison.texinfo (Mfcalc Symtab): Correct the prototype for + putsym. Typo reported by Sebastian Piping. + +2005-02-23 Paul Eggert + + * doc/bison.texinfo (Language and Grammar): some -> same + (Epilogue): int he -> in the + Typos reported by Sebastian Piping via Justin Pence. + +2005-02-07 Paul Eggert + + * tests/glr-regression.at (Improper handling of embedded actions + and dollar(-N) in GLR parsers): Renamed from "Improper handling of + embedded actions and $-N in GLR parsers", work around an Autoconf bug + with dollar signs in test names. + * tests/input.at (Invalid dollar-n): Renamed from "Invalid \$n", + for a similar reason. + +2005-01-28 Paul Eggert + + * src/vcg.c (output_graph): G_VIEW -> normal_view in case someone + wants to redefine G_VIEW. + +2005-01-27 Paul Eggert + + * src/vcg.c (get_view_str): Remove case for normal_view. + Problem reported by twlevo@xs4all.nl. + +2005-01-24 Paul Eggert + + * configure.ac (O0CFLAGS, O0CXXFLAGS): Fix quoting bug. + Problem reported by twlevo@xs4all.nl. + + * doc/bison.texinfo: Change @dircategory from "GNU programming + tools" to "Software development". Requested by Richard Stallman + via Karl Berry. + +2005-01-23 Paul Eggert + + * tests/c++.at (AT_CHECK_DOXYGEN): Don't use options after operands. + Problem reported by twlevo@xs4all.nl. + +2005-01-21 Paul Eggert + + * data/yacc.c (YYCOPY, yystpcpy, yyparse): Remove "register" + keyword; it's not needed with modern compilers, and it doesn't + affect correctness with older compilers. Suggested by + twlevo@xs4all.nl. + +2005-01-17 Paul Eggert + + * data/glr.c (yyuserAction): Add "default: break;" case to pacify + gcc -Wswitch-default. + * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise. + * data/yacc.c (yyparse): Likewise. + +2005-01-12 Paul Eggert + + * src/system.h (OUTPUT_EXT, TAB_EXT): Define only if not defined + already. Let config.h define any nonstandard values. + +2005-01-10 Paul Eggert + + * tests/calc.at (_AT_DATA_CALC_Y): Use alarm (100), not alarm (10), + for the benefit of slower hosts. Problem reported by + Nelson H. F. Beebe. + +2005-01-07 Paul Eggert + + * data/yacc.c (yyparse): Pacify non-GCC compilers about yyerrorlab + being defined and not used. + * data/lalr1.cc (yyparse): Likewise. + Use "if (false)" rather than "if (0)". + +2005-01-05 Paul Eggert + + * TODO: Mention that we should allow NUL bytes in tokens. + +2005-01-02 Paul Eggert + + * src/scan-skel.l (<>): Don't close standard output. + Problem reported by Hans Aberg. + +2005-01-01 Paul Eggert + + * src/getargs.c (version): Happy new year; update overall + program copyright date from 2004 to 2005. + + * src/scan-skel.l ("@output ".*\n): Don't close standard output. + Problem reported by Hans Aberg. + * tests/output.at (AT_CHECK_OUTPUT): New arg SHELLIO. + (Output file names.): Add a test for the case when standard output + is closed. + +2004-12-26 Paul Eggert + + * doc/bison.texinfo (@copying): Update FDL version number to 1.2, + to fix an oversight in the Bison 2.0 manual. + +2004-12-25 Paul Eggert + + * NEWS: Version 2.0. Reformat the existing news items since + 1.875, so that related items are grouped together. + * configure.ac (AC_INIT): Bump version to 2.0. + * src/parse-gram.c, src/parse-gram.h: Regenerate with 2.0. + + * tests/torture.at (Exploding the Stack Size with Alloca): Set + YYSTACK_USE_ALLOCA to 1 if __GNUC__ or alloca are defined; + otherwise, we're not testing alloca. Unfortunately there's no + simple way to consult HAVE_ALLOCA here. + + * data/lalr1.cc (yydestruct_): Pacify unused variable warning + for yymsg, too. + + * src/LR0.c (new_itemsets): Use memset rather than zeroing by + hand. This avoids a warning about comparing int to size_t when + GCC warnings are enabled. + +2004-12-22 Paul Eggert + + * NEWS: Bison-generated parsers no longer default to using the + alloca function (when available) to extend the parser stack, due + to widespread problems in unchecked stack-overflow detection. + * data/glr.c (YYMAXDEPTH): Remove undef when zero. It's the user's + responsibility to set it to a positive value. This lets the user + specify a value that is not a preprocessor constant. + * data/yacc.c (YYMAXDEPTH): Likewise. + (YYSTACK_ALLOC): Define only if YYSTACK_USE_ALLOCA is nonzero. + * doc/bison.texinfo (Stack Overflow): YYMAXDEPTH no longer needs + to be a compile-time constant. However, explain the constraints on it. + Also, explain the constraints on YYINITDEPTH. + (Table of Symbols): Explain that alloca is no longer the default. + Explain the user's responsibility if they define YYSTACK_USE_ALLOCA + to 1. + + * doc/bison.texinfo (Location Default Action): Mention that n must + be zero when k is zero. Suggested by Frank Heckenbach. + +2004-12-22 Akim Demaille + + * data/lalr1.cc (parser::token_number_type, parser::rhs_number_type) + (parser::state_type, parser::semantic_type, parser::location_type): + Private, not public. + (parser::parse): Return ints, not bool. + Returning a bool introduces a problem: 0 corresponds to false, and + it seems weird to return false on success. Returning true changes + the conventions for yyparse. + Alternatively we could return void and send an exception. + There is no clear consensus (yet?). + (state_stack, semantic_stack, location_stack): Rename as... + (state_stack_type, semantic_stack_type, location_stack_type): these. + Private, not public. + * tests/c++.at: New. + * tests/testsuite.at, tests/Makefile.am: Adjust. + +2004-12-21 Akim Demaille + + * data/lalr1.cc (parser::parse): Return a bool instead of an int. + +2004-12-21 Akim Demaille + + Don't impose std::string for filenames. + + * data/lalr1.cc (b4_filename_type): New. + (position::filename): Use it. + (parser.hh): Move the inclusion of stack.hh and location.hh below + the user code, so that needed headers for the filename type can be + included first. + Forward declare them before the user code. + * tests/Makefile.am (check-local, installcheck-local): Pass + TESTSUITEFLAGS to the TESTSUITE. + +2004-12-20 Akim Demaille + + Use more STL like names: my_class instead of MyClass. + + * data/lalr1.cc (LocationStack, LocationType, RhsNumberType) + (SemanticStack, SemanticType, StateStack, StateType) + (TokenNumberType, Stack, Slice, Traits, Parser::location) + (Parser::value): Rename as... + (location_stack, location_type, rhs_number_type, semantic_stack) + (semantic_type, state_stack, state_type, token_number_type, stack) + (slice, traits, parser::yylloc, parser::yylval): these. + + * tests/calc.at, tests/regression.at, tests/actions.at: Adjust. + +2004-12-19 Paul Eggert + + * data/glr.c (YYLLOC_DEFAULT): Use GNU spacing conventions. + * data/yacc.c (YYLLOC_DEFAULT): Likewise. + +2004-12-17 Paul Eggert + + Remove uses of 'short int' and 'unsigned short int'. This raises + some arbitrary limits. It uses more memory but nowadays that's + not much of an issue. + + This change does not affect the generated parsers; that's a different + task, as some users will want to conserve memory there. + + Ideally we should use size_t to represent all object counts, and + something like ptrdiff_t to represent signed differences of object + counts; but that will require more code-cleanup than I have the + time to do right now. + + * src/LR0.c (allocate_itemsets, new_itemsets, save_reductions): + Use size_t, not int or short int, to count objects. + * src/closure.c (nritemset, closure): Likewise. + * src/closure.h (nritemset, closure): Likewise. + * src/nullable.c (nullable_compute): Likewise. + * src/print.c (print_core): Likewise. + * src/print_graph.c (print_core): Likewise. + * src/state.c (state_compare, state_hash): Likewise. + * src/state.h (struct state): Likewise. + * src/tables.c (default_goto, goto_actions): Likewise. + + * src/gram.h (rule_number, rule): Use int, not short int. + * src/output.c (prepare_rules): Likewise. + * src/state.h (state_number, STATE_NUMBER_MAXIMUM, transitions, + errs, reductions): Likewise. + * src/symtab.h (symbol_number, SYMBOL_NUMBER_MAXIMUM, struct symbol): + Likewise. + * src/tables.c (vector_number, tally, action_number, + ACTION_NUMBER_MINIMUM): Likewise. + * src/output.c (muscle_insert_short_int_table): Remove. + +2004-12-17 Akim Demaille + + * data/lalr1.cc: Extensive Doxygenation. + (error_): Rename as... + (error): this, since it is visible to the user. + Adjust callers. + (Parser::message): Now an automatic variable from... + (Parser::yyreport_syntax_error_): here. + * tests/actions.at, tests/calc.at, tests/regression.at: Adjust to + Parser::error. + * tests/input.at: Escape $. + +2004-12-16 Paul Eggert + + * data/glr.c (b4_lhs_value, b4_rhs_value, b4_rhs-location): + Parenthesize rhs to avoid obscure problems with mistakes like + "foo$$bar = foo$1bar;". Problem reported by twlevo at xs4all. + * data/lalr1.cc (b4_lhs_value, b4_rhs_value, b4_lhs_location, + b4_rhs_location): Likewise. + * data/yacc.c (b4_lhs_value, b4_rhs_value, b4_lhs_location, + b4_rhs_location): Likewise. + +2004-12-16 Akim Demaille + + * data/lalr1.cc (yyreport_syntax_error_): Catch up with glr.c and + yacc.c: be sure to stay within yycheck_. + * tests/actions.at: Re-enable C++ tests. + +2004-12-16 Akim Demaille + + * src/print_graph.c (print_graph): Remove layoutalgorithm uses for + real. + +2004-12-16 Akim Demaille + + Use #define to handle the %name-prefix. + + * data/glr.c, data/yacc.c: Comment changes. + * data/lalr1.cc (yylex): Use #define to select the name of yylex, + so that one can refer to yylex in the parser file, and have it + renamed, as is the case with other skeletons. + +2004-12-16 Akim Demaille + + Move lalr1.cc internals into yy*. + + * data/lalr1.cc (semantic_stack_, location_stack_, state_stack_) + (semantic_stack_, location_stack_, pact_, pact_ninf_, defact_) + (pgoto_, defgoto_, table_, table_ninf_, check_, stos_, r1_, r2_) + (name_, rhs_, prhs_, rline_, token_number_, eof_, last_, nnts_) + (empty_, final_, terror_, errcode_, ntokens_) + (user_token_number_max_, undef_token_, n_, len_, state_, nerrs_) + (looka_, ilooka_, error_range_, nerrs_): + Rename as... + (yysemantic_stack_, yylocation_stack_, yystate_stack_) + (yysemantic_stack_, yylocation_stack_, yypact_, yypact_ninf_) + (yydefact_, yypgoto_, yydefgoto_, yytable_, yytable_ninf_) + (yycheck_, yystos_, yyr1_, yyr2_, yyname_, yyrhs_, yyprhs_) + (yyrline_, yytoken_number_, yyeof_, yylast_, yynnts_, yyempty_) + (yyfinal_, yyterror_, yyerrcode_, yyntokens_) + (yyuser_token_number_max_, yyundef_token_, yyn_, yylen_, yystate_) + (yynerrs_, yylooka_, yyilooka_, yyerror_range_, yynerrs_): + these. + +2004-12-15 Paul Eggert + + Fix some problems reported by twlevo at xs4all. + * src/symtab.c (symbol_new): Report an error if the input grammar + contains too many symbols. This is better than calling abort() later. + * src/vcg.h (enum layoutalgorithm): Remove. All uses removed. + (struct node, struct graph): + Rename member expand to stretch. All uses changed. + (struct graph): Remove member layoutalgorithm. All uses removed. + * src/vcg.c (get_layoutalgorithm_str): Remove. All uses removed. + * src/vcg_defaults.h (G_STRETCH): Renamed from G_EXPAND. + All uses changed. + (N_STRETCH): Rename from N_EXPAND. All uses changed. + +2004-12-15 Akim Demaille + + * data/lalr1.cc: Normalize /** \brief ... */ to ///. + Add more Doxygen comments. + (symprint_, stack_print_, reduce_print_, destruct_, pop) + (report_syntax_error_, translate_): Rename as... + (yysymprint_, yystack_print_, yyreduce_print_, yydestruct_) + (yypop_, yyreport_syntax_error_, yytranslate_): this. + +2004-12-15 Akim Demaille + + * data/lalr1.cc (lex_): Rename as... + (yylex_): this. + Move the trace here. + Take the %name-prefix into account. + Reported by Alexandre Duret-Lutz. + +2004-12-15 Akim Demaille + + Simplify the C++ parser constructor. + + * data/lalr1.cc (debug_): Rename as... + (yydebug_): so that the parser's internals are always in the yy* + pseudo namespace. + Adjust uses. + (b4_parse_param_decl): Remove the leading comma as it is now only + called as unique argument list. + (Parser::Parser): Remove the constructor accepting a location and + an initial debugging level. + Remove from the other ctor the argument for the debugging level. + (debug_level_type, debug_level, set_debug_level): New. + + * tests/actions.at, tests/calc.at, tests/regression.at: Adjust + constructor calls. + +2004-12-15 Akim Demaille + + Remove b4_root related material: failure experiment + (which goal was to allow to derive from a class). + + * data/lalr1.cc (b4_root, b4_param, b4_constructor): Remove + definitions and uses. + +2004-12-14 Paul Eggert + + * data/glr.c (struct yyGLRStack): yyerror_range now has 3 items, + not 2, since it's not portable to subtract 1 from the start of an + array. The new item 0 is never set or used. All uses changed. + + (yyrecoverSyntaxError): Use YYLLOC_DEFAULT instead of assuming + the default definition of YYLLOC_DEFAULT. Problem reported + by Frank Heckenbach. + +2004-12-12 Paul Eggert + + * data/glr.c (YYRHSLOC): Don't have two definitions, one for + the normal case and one for the error case. Just use the + first one uniformly. Problem reported by Frank Heckenbach. + (YYLLOC_DEFAULT): Use the conventions of yacc.c, so we can + use exactly the same macro in both places. + (yyerror_range): Now of type yyGLRStackItem, not YYLTYPE, + so that the normal-case YYRHSLOC works for the error case too. + All uses changed. + * data/yacc.c (YYRHSLOC): New macro, taken from glr.c. + (YYLLOC_DEFAULT): Use the same macro as glr.c. + * doc/bison.texinfo (Location Default Action): Don't claim that + we have an array of locations. Use the same macro for both glr + and lalr parsers. Mention YYRHSLOC. Mention what happens when + the index is 0. + +2004-12-10 Paul Eggert + + * HACKING: Update email addresses to send announcements to. + + * configure.ac (AC_INIT): Bump version to 1.875f. + +2004-12-10 Paul Eggert + + * NEWS: Version 1.875e. + * src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875e. + + * src/scan-skel.l: Include "complain.h", for "fatal". + + * src/relation.h (relation_print, relation_digraph): + Relation sizes are of type relation_node, not size_t (this is + merely a doc fix, since the two types are equivalent). + (relation_transpose): Relation sizes are of type relation_node, + not int. + * src/relation.c: Likewise. + (top, infinity): Now of type relation_node, not int. + (traverse, relation_transpose): Use relation_node, not int. + + * data/glr.c (yyuserAction, yyrecoverSyntaxError): Mark args + with ATTRIBUTE_UNUSED if they're not used, to avoid GCC warning. + (yyparse): Remove unused local introduced in 2004-10-25 patch. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): New arg + specifying whether the test should be skipped. Use it tp + specify that the [%defines %skeleton "lalr1.cc"] tests currently + fail on some hosts, and should be skipped. + +2004-12-08 Paul Eggert + + * src/system.h (CALLOC, MALLOC, REALLOC): Remove. All callers + changed to use xcalloc, xnmalloc, xnrealloc, respectively, + unless otherwise specified below. + + * src/LR0.c (allocate_itemsets): Use xnmalloc, not xcalloc, + to allocate kernel_base, kernel_items, kernel_size, since + they needn't be initialized to 0. + (allocate_storgae): Likewise, for shiftset, redset, shift_symbol. + * src/closure.c (new_closure): Likewise, for itemset. + * src/derives.c (derives_compute): Likewise, for delts, derives, q. + * src/lalr.c (set_goto_map): Likewise, for temp_map. + (initialize_F): Likewise, for reads, edge, reads[i], includes[i]. + (build_relations): Likewise for edge, states1, includes. + * src/nullable.c (nullable_compute): Likewise, for squeue, relts. + * src/reader.c (packgram): Likewise, for ritem, rules. + * src/reduce.c (nonterminals_reduce): Likewise for nontermmap. + * src/relation.c (relation_digraph): Likewise for VERTICES. + (relation_transpose): Likewise for new_R, end_R. + * src/symtab.c (symbols_token_translations_init): Likewise for + token_translations. + * src/tables.c (save_row): Likewise for froms, tos, conflict_tos. + (token_actions): Likewise for yydefact, actrow, conflrow, + conflict_list. + (save_column): Likewise for froms[symno], tos[symno]. + (goto_actions): Likewise for state_count. + (pack_table): Likewise for base, pos, check. + (tables_generate): Likewise for width. + + * src/LR0.c (set_states): Don't reuse kernel_size and kernel_base + for initial core. Just have a separate core, so we needn't worry + about whether kernel_size and kernel_base are initialized. + + * src/LR0.c (shift_symbol, redset, shiftset, kernel_base, + kernel_size, kernel_items): Remove unnecessary initialization. + * src/conflicts.c (conflicts): Likewise. + * src/derives.c (derives): Likewise. + * src/muscle_tablc (muscle_insert): Likewise. + * src/relation.c (relation_digraph): Likewise. + * src/tables.c (froms, tos, conflict_tos, tally, width, actrow, order, + conflrow, conflict_table, conflict_list, table, check): + Likewise. + + * src/closure.c (new_closure): Arg is of type unsigned int, not int. + This is because all callers pass unsigned int. + * src/closure.h (new_closure): Likewise. + + * src/lalr.c (initialize_F): Initialize reads[i] in all cases. + (build_relations): Initialize includes[i] in all cases. + * src/reader.c (packgram): Always initialize rules[ruleno].prec + and rules[ruleno].precsym. Initialize members in order. + * src/relation.c (relation_transpose): Always initialize new_R[i] + and end_R[i]. + * src/table.c (conflict_row): Initialize 0 at end of conflict_list. + + * src/output.c (prepare_actions): Pass 0 instead of conflict_list[0]; + conflict_list[0] was always 0, but now it isn't initialized. + + * src/table.c (table_grow): When conflict_table grew, the grown + area wasn't cleared. Fix this. + + * lib/.cvsignore: Add strdup.c, strdup.h. + * m4/.cvsignore: Add strdup.m4. + +2004-12-07 Paul Eggert + + * src/lalr.h (GOTO_NUMBER_MAXIMUM): New macro. + * src/lalr.c (set_goto_map): Don't allow ngotos to equal + GOTO_NUMBER_MAXIMUM, since we occasionally compute + ngotos + 1 without checking for overflow. + (build_relations): Use END_NODE, not -1, to denote end of edges. + * src/lalr.c (set_goto_map, map_goto, initialize_F, add_loopback_edge, + build_relations): Use goto_number, not int, for goto numbers. + * src/tables.c (save_column, default_goto): Likewise. + +2004-11-23 Akim Demaille + + * data/lalr1.cc (YYSTYPE): Define it as is done for C, instead + of #defining from yystype. + Don't typedef yystype, C++ does not need it. + This lets it possible to forward declare it as union. + +2004-11-23 Paul Eggert + + * bootstrap (gnulib_modules): Add extensions. + Problem reported by Jim Meyering. + +2004-11-22 Paul Eggert + + * src/LR0.c, src/closure.c, src/derives.c, src/gram.c, + src/lalr.c, src/nullable.c, src/relation.c, src/scan-skel.l, + src/system.h, src/tables.c: XFREE -> free, to accommodate + recent change to gnulib xalloc.h. + Problem reported by Jim Meyering. + +2004-11-17 Akim Demaille + + * data/lalr1.cc (symprint_): Use cdebug_ to avoid warnings. + +2004-10-28 Akim Demaille , + Alexandre Duret-Lutz + + * data/lalr1.cc (Parser::yycdebug_): New, a pointer, to allow + changes. + (YYCDEBUG): Adjust. + Use it instead of cdebug_. + (Parser::debug_stream, Parser::set_debug_stream): New. + (Parser::symprint_): Define cdebug_ for temporary backward + compatibility. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Use + debug_stream (). + +2004-11-17 Akim Demaille + + * data/lalr1.cc (Parser:print_): Remove, use %printer instead. + * tests/regression.at (_AT_DATA_DANCER_Y): Adjust. + * tests/calc.at (_AT_DATA_CALC_Y): Ditto. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise. + +2004-10-27 Paul Eggert + + * data/glr.c (yyloc_default): Remove; not used. + Problem reported by Frank Heckenbach. + +2004-10-25 Akim Demaille + + * data/glr.c (YYRHSLOC): Move its definition next to its uses. + Introduce another definition to address simple location arrays. + (yyGLRStack): New member: yyerror_range. + (yyrecoverSyntaxError, yyparse): Update it. + (yyrecoverSyntaxError): Use it when shifting the error token to + have an accurate range, equivalent to the one computed by both + yacc.c and lalr1.cc. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Change its yylex so + that column numbers start at column 0, as per GNU Coding + Standards, the others tests, and the doc. + (_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT_WITH_LOC): + Adjust to the above change (first column is 0). + And adjust the location of the "", now covering the whole + line. + +2004-10-22 Akim Demaille + and Paul Eggert + + Remove some arbitrary limits on goto numbers and relations. + * src/lalr.c (goto_map, ngotos, from_state, to_state): Omit + initial values, since they're never used. + (set_goto_map): ngotos is now unsigned, so test for overflow + by seeing whether it wraps around to zero. + * src/lalr.h (goto_number): Now size_t, not short int. + (GOTO_NUMBER_MAXIMUM): Remove. + * src/relation.c (relation_print, traverse, relation_transpose): + Check for END_NODE rather than looking at sign. + * src/relation.h (END_NODE): New macro. + (relation_node): Now size_t, not short int. + +2004-10-22 Paul Eggert + + * doc/bison.texinfo (Language and Grammar): In example, "int" is a + keyword, not an identifier. Problem reported by Baron Schwartz in + . + +2004-10-11 Akim Demaille + + * src/symtab.c (symbol_check_alias_consistency): Also check + type names, destructors, and printers. + Reported by Alexandre Duret-Lutz. + Recode the handling of associativity and precedence in terms + of symbol_precedence_set. + Accept no redeclaration at all, not even equal to the previous + value. + (redeclaration): New. + Use it to factor redeclaration complaints. + (symbol_make_alias): Don't set the type of the alias, let + symbol_check_alias_consistency do it as for other features. + * src/symtab.h (symbol): Add new member prec_location, and + type_location. + * src/symtab.c (symbol_precedence_set, symbol_type_set): Set them. + * tests/input.at (Incompatible Aliases): New. + +2004-10-09 Paul Eggert + + .cvsignore fixes to accommodate gnulib changes, + and the practice of naming build directories "_build". + * .cvsignore: Add "_*". Sort. + * lib/.cvsignore: Add getopt_.h, xalloc-die.c. + * m4/.cvsignore: Add "*_gl.m4". + +2004-10-06 Akim Demaille + + * src/parse-gram.y (add_param): Fix the truncation of trailing + spaces. + +2004-10-05 Akim Demaille + + In Bison 1.875's yacc.c, YYLLOC_DEFAULT was called regardless + whether the reducion was empty or not. This leaves room to + improve the use of YYLLOC_DEFAULT in such a case. + lalr1.cc is still experimental, so changing this is acceptable. + And finally, there are probably not many users who changed the + handling of locations in GLR, so changing is admissible too. + + * data/glr.c, data/lalr1.cc, data/yacc.c (YYLLOC_DEFAULT): On an + empty reduction, set @$ to an empty location ending the previously + stacked symbol. + Adjust uses to make sure the code is triggered on empty + reductions. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust the + expected output: empty reductions have empty locations. + +2004-09-29 Akim Demaille + + * data/lalr1.cc: Move towards a more standard C++ coding style + for templates: Class < T > -> Class. + +2004-09-29 Akim Demaille + + * data/lalr1.cc: Reinstall the former ctor, for sake of + compatibility, but warn it will be removed. + Move towards a more standard C++ coding style (i.e., type *var -> + type* var). + +2004-09-27 Paul Eggert + + * src/parse-gram.y (add_param): Rewrite to avoid strchr, + since it's less likely to work if NULs are involved in the future. + +2004-09-27 Akim Demaille + + * data/yacc.c (YY_LOCATION_PRINT): Fix its default declaration. + +2004-09-27 Akim Demaille + + * data/lalr1.cc (b4_parse_param_decl_1): New. + (b4_parse_param_decl): Use it to have different names between attribute + and argument names. + (b4_cc_constructor_call): Likewise. + +2004-09-24 Akim Demaille + + * src/parse-gram.y (add_param): Strip the leading and trailing + blanks from a formal argument declaration. + (YY_LOCATION_PRINT): New. + +2004-09-24 Akim Demaille + + * data/c.m4 (b4_yysymprint_generate): Move the YYINPUT invocation + after the location. + +2004-09-24 Akim Demaille + + * doc/bison.texinfo (Table of Symbols): Sort. + +2004-09-21 Akim Demaille + + * data/yacc.c, data/glr.c (b4_at_dollar, b4_dollar_dollar): Remove + the useless parentheses. + Suggested by Paul Eggert. + +2004-09-20 Akim Demaille + + Let the initial-action act on the look-ahead, and use it for the + "initial push" (corresponding to an hypothetical beginning-of-file). + And let lalr1.cc honor %initial-action. + + * doc/bison.texinfo (Initial Action Decl): Clarify, and add an + example. + * data/lalr1.cc (Parser::initlocation_): Remove, bad experiment. + (Parser::Parser): Remove the ctor that used to initialize it. + (Parser::parse): Like in the other skeletons, issue the "starting + parse" message before any action. + Honor %initial-action. + Initialize the stacks with the lookahead. + * data/yacc.c: Let $$ and @$ in %initial-action designate the + look-ahead. + Push them in the stacks. + * tests/actions.at, tests/calc.at: Adjust the C++ ctor invocations. + +2004-09-20 Akim Demaille + + * doc/bison.texinfo (Initial Action Decl): New. + +2004-09-20 Akim Demaille + + * data/yacc.c (YY_LOCATION_PRINT): Use YYLTYPE_IS_TRIVIAL as a + clearer criterion to define it. + (parse): Initialize the initial location when YYLTYPE_IS_TRIVIAL. + When reducing on an empty RHS, use the latest stacked location as + location. + yylloc is not always available. + * data/glr.c: Likewise. + Also, honor initial-actions. + +2004-09-20 Akim Demaille + + * data/yacc.c (YY_LOCATION_PRINT): New. + Define when we know YYLTYPE's structure, i.e., when the default + YYLLOC_DEFAULT is used. + * data/c.m4 (b4_yysymprint_generate): Use it. + * data/lalr1.cc (YYLLOC_DEFAULT): Stop relying on the initial + value of the result. + (error_start_): Replace with... + (error_range_): this location array. + This allows to replace code relying on the implementation of + locations by portable code. + * data/yacc.c (yylerrsp): Replace with... + (yyerror_range): this. + Every time a token is popped, update yyerror_range[0], to have an + accurate location for the error token. + * data/glr.c (YY_LOCATION_PRINT): New. + (yyprocessOneStack): Fix an invocation of YY_SYMBOL_PRINT: + deference a pointer. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): No longer + report the location in %printers. + + * src/scan-skel.l: Instead of abort, report error messages to ease + understanding skeleton scanning failures. + +2004-09-16 Akim Demaille + + * data/lalr1.cc (Stack::Iterator, Stack::ConstIterator): Rename as... + (iterator, const_iterator): these, to be more in the C++ spirit. + Also, return reverse iterators so that when displaying the stack + we display its bottom first. + (Parser::stack_print_, Parser::reduce_print_): Match the messages + from yacc.c. + We should probably use vector here though. + +2004-09-16 Akim Demaille + + Have more complete shift traces. + + * data/yacc.c, data/lalr1.c, data/glr.c: Use YY_SYMBOL_PRINT + to report Shifts instead of ad hoc YYDPRINTF invocations, + including for the error token. + * data/lalr1.cc (symprint_): Output the location. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): In C++, don't + output the location within the %printer. + Activate GLR tests, at least to make sure they compile properly. + They still don't pass though. + * tests/calc.at: Adjust expect verbose output, since now "Entering + state..." is on a different line than the "Shifting" message. + +2004-09-08 Akim Demaille + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Move the + Bison directive from the Bison file to the invocation of this + macro, so that these directives are passed to + AT_BISON_OPTION_PUSHDEFS to get correct help macros. + Use these helping macros (e.g., AT_LOC, AT_VAL and so forth). + Move the AT_SETUP/AT_CLEANUP outside, to report as test title + the extra Bison directives instead of the whole series. + Change the grammar so that there are recoverable errors, and + unrecoverable errors. Now we can have the parser give up before + consuming the whole input. As a result we now can observe that + the lookahead is freed when needed. + Change the parser source to parse argv[1] instead of a hard coded + string. + Simplify yylex, and give a value and location to EOF. + Simplify some invocations of AT_CHECK_PRINTER_AND_DESTRUCTOR that + passed directives already coded in the file. + Add some tests to check the location of "error". + For some tests, the C++ parser is correct, and not yacc.c. + For other tests, they provide different, but unsatisfying, values, + so keep the C++ value so that at least one parser is "correct" + according to the test suite. + (Actions after errors): Remove, this is subsumed by the + AT_CHECK_PRINTER_AND_DESTRUCTOR series. + +2004-09-06 Akim Demaille + + * data/lalr1.cc: Adjust the indentation of the labels. + (Parser::pop): New. + Use it. + +2004-09-06 Akim Demaille + + * data/yacc.cc, data/glr.cc (yydestruct): Accept an additional + argument, an informative message. + Call YY_SYMBOL_PRINT. + Adjust all callers: integrate the associated YY_SYMBOL_PRINT. + * data/lalr1.cc (destruct_): Likewise. + In addition, no longer depend on b4_yysymprint_generate and + b4_yydestruct_generate to generate these functions, do it "by + hand". + +2004-09-03 Akim Demaille + + * data/glr.c, data/lalr1.cc, data/yacc.c: When YYABORT was + invoked, yydestruct the lookahead. + * tests/calc.at (Calculator $1): Update the expected lengths of + traces: there is an added line for the discarded lookahead. + * doc/bison.texinfo (Destructor Decl): Some rewording. + Define "discarded" symbols. + +2004-09-02 Akim Demaille + + * data/lalr1.cc (translate_, destruct_): No reason to be static. + +2004-09-02 Akim Demaille + + * data/glr.c, yacc.c (YYDSYMPRINT): Remove, not used. + (YYDSYMPRINTF): Rename as... + (YY_SYMBOL_PRINT): this. + * data/lalr1.cc (YY_SYMBOL_PRINT): New, modeled after the previous + two. + Use it instead of direct symprint_ calls. + (yybackup): Tweak the "Now at end of input" case to match yacc.c's + one. + +2004-09-02 Akim Demaille + + * data/lalr1.cc (b4_yysymprint_generate): New. + (symprint_): New member function, defined when YYDEBUG. + Use it consistently instead of token/nterm debugging output by + hand. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust + %printer calls to use cdebug_ when using lalr1.cc. + +2004-08-30 Florian Krohm + + * data/glr.c: Guard the declarations of yypstack and yypdumpstack + with #ifdef YYDEBUG. + +2004-08-26 Akim Demaille + + * doc/bison.texinfo (Implementing Loops): Rename as... + (Implementing Gotos/Loops): this. + +2004-08-13 Paul Eggert + + Adjust to latest gnulib. + * bootstrap (gnulib_modules): Add xalloc-die. + Set LC_ALL=C so that file names sort consistently. + Prefer the gnulib copies of gettext.m4, glibc21.m4, + inttypes_h.m4, lib-ld.m4, lib-prefix.m4, po.m4, stdint_h.m4, + uintmax_t.m4, ulonglong.m4. + (intl_files_to_remove): Add gettext.m4, lib-ld.m4, lib-prefix.m4, + po.m4 since we are now using _gl.m4 instead. + +2004-08-10 Florian Krohm + + * src/scan-action.l: Remove. Scanning of semantic actions is + handled in scan-gram.l. + +2004-08-07 Florian Krohm + + * src/scan-gram.l (handle_syncline): Use uniqstr_new not xstrdup. + + * src/location.h (struct): The file member is a uniqstr. + (equal_boundaries): Use UNIQSTR_EQ for comparison. + +2004-07-22 Paul Eggert + + Fix bug with non-%union parsers that have printers or destructors, + which led to a Bison core dump. Reported by Peter Fales in + . + + * data/c.m4 (b4_symbol_actions): Don't assume %union was used. + * data/lalr1.cc (yystype) [defined YYSTYPE]: Define to YYSTYPE, + not to our own type. + * src/output.c (symbol_destructors_output, symbol_printers_output): + Don't assume %union. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR, + AT_CHECK_PRINTER_AND_DESTRUCTOR): New argument + UNION-FLAG. All callers changed. + (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't assume %union. + Use type char, not unsigned int, when declaring an array of char; + this lets us remove a cast. + (Printers and Destructors): Add non-%union test cases. + +2004-06-21 Paul Eggert + + * doc/bison.texinfo: Minor editorial changes, mostly to the new + GLR writeups. E.g., avoid frenchspacing and the future tense, + change "lookahead" to "look-ahead", and change "wrt" to "with + respect to". + +2004-06-21 Paul Hilfinger + + * doc/bison.texinfo (Merging GLR Parses, Compiler Requirements): + New sections, split off from the GLR Parsers section. Put the new + Simple GLR Parser near the start of the GLR section, for clarity. + Rewrite connective text. + +2004-06-21 Frank Heckenbach + + * doc/bison.texinfo (Simple GLR Parsers): New section. + +2004-06-21 Paul Eggert + + * NEWS, TODO, doc/bison.texinfo: + Use "look-ahead" instead of "lookahead", to be consistent. + * REFERENCES: Fix incorrect reference to DeRemer and Pennello, + while we're fixing "look-ahead". + * src/conflicts.c (shift_set): Renamed from shiftset. + (look_ahead_set): Renamed from lookaheadset. + * src/print.c: Likewise. + * src/getargs.c (report_args): Add "look-ahead" as the new canonical + name for "lookahead". + (report_types, usage): Likewise. + * src/getargs.h (report_look_ahead_tokens): Renamed from + report_lookaheads. + * src/lalr.c (compute_look_ahead_tokens): Renamed from + compute_lookaheads. + (state_look_ahead_tokens_count): Renamed from state_lookaheads_count. + (look_ahead_tokens_print): Renamed from lookaheads_print. + * src/state.c (state_rule_look_ahead_tokens_print): Renamed from + state_rule_lookaheads_print. + * src/state.h: Likewise. + (reductions.look_ahead_tokens): Renamed from lookaheads. + * tests/torture.at (AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR): Renamed from + AT_DATA_LOOKAHEADS_GRAMMAR. + +2004-06-03 Paul Eggert + + * README: Update location of patched M4 distribution. + +2004-05-30 Albert Chin-A-Young + + Don't assume the C++ compiler takes the same arguments as the C compiler + (trivial change). + * configure.ac (O0CXXFLAGS): New var. + * tests/atlocal.in (CXXFLAGS): Use it. + +2004-05-29 Paul Eggert + + Fix some "make check" problems with C++ reported by + Albert Chin-A-Young for Tru64 C++ in this thread: + http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00049.html + + * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check for std::cerr. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): + Output to a .cc file for C++, not to a .c file. + * tests/calc.at (AT_CHECK_CALC): Likewise. + * tests/regression.at (AT_CHECK_DANCER): Likewise. + * tests/local.at (AT_COMPILE_CXX): Default to OUTPUT.cc, not OUTPUT.c. + +2004-05-28 Albert Chin-A-Young + + * tests/calc.at, tests/actions.at: Workaround for SGI + C++ compiler. (trivial change) + +2004-05-27 Paul Eggert + + Spent a few hours checking out which prerequisite versions the + current sources actually require. I went all the way back to + Gettext 0.10.40, Automake 1.4, and Autoconf 2.57 and investigated + a seemingly endless set of combinations of versions more recent + than that. The bottom line is that the current sources require + fairly recent versions of the build tools, and it'll be some work + to change this. + * configure.ac (AC_PREREQ): Increase from 2.58 to 2.59. + (AM_INIT_AUTOMAKE): Increase from 1.7 to 1.8. + (AM_GNU_GETTEXT_VERSION): Increase from 0.11.5 to 0.12. + Add comments explaining why those particular versions are + currently needed. + + * src/parse-gram.y (lloc_default): Rewrite to avoid compiler bug + in SGI MIPSpro 7.4.1m. Problem reported by Albert Chin-A-Young in + . + + * configure.ac (AC_PREREQ): Bump to 2.58, since 2.57 doesn't work + (it fails with a Autoconf-without-aclocal-m4 diagnostic). + +2004-05-26 Paul Eggert + + * configure.ac (AM_GNU_GETTEXT_VERSION): Lower it from 0.14.1 to + 0.11.5. Suggested by Bruno Haible. + * bootstrap: Remove gettext version checking. + + * doc/bison.texinfo (Decl Summary): Also mention that %union + can depend on prerequisite types. Problem reported by Tim + Van Holder. + +2004-05-25 Paul Eggert + + * README: Mention GNU m4 1.4 bugs and Akim's patched version. + * README-alpha: Don't tell people not to package this. + + * bootstrap: Don't assume $(...) works; use `...` instead. + Problem reported by Paul Hilfinger. Also, diagnose non-GNU + gettext better. + + * doc/bison.texinfo (Decl Summary, Bison Options): Clarify what's + put into the -d output file, and mention what to do if YYSTYPE is + defined as a macro. + +2004-05-24 Paul Eggert + + Undo change made earlier today: it caused autopoint to not bring + in ABOUT-NLS. Ouch. Instead, substitute our own diagnostic for + autopoint's. + + * bootstrap: Check that gettext version matches what's in + configure.ac. Warn users to ignore robots.txt ERROR 404. + * bootstrap: Undo today's earlier change (logged below). + * configure.ac (AM_GNU_GETTEXT_VERSION): Likewise. + + The gettext version checking is causing more trouble than it's + curing; remove it. Problem reported by Paul Hilfinger. + + * bootstrap: Issue a warning that one can expect a message + 'AM_GNU_GETTEXT is used, but not AM_GNU_GETTEXT_VERSION'. + * configure.ac (AM_GNU_GETTEXT_VERSION): Remove. + +2004-05-23 Paul Eggert + + Ensure that the C++ compiler used for testing actually works on a + simple test program; if not, skip the C++-related tests. Problem + reported by Vin Shelton in: + http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00026.html + + * m4/cxx.m4: New file. + * configure.ac (BISON_TEST_FOR_WORKING_CXX_COMPILER): Add. + * tests/atlocal.in (BISON_CXX_WORKS): Add. + * tests/local.at (AT_COMPILE_CXX): Use it. + +2004-05-21 Paul Eggert + + * data/glr.c (yylloc): Output this macro even if locations are not + being generated, as the GLR parser needs it even in that case. + Problem reported by Troy A. Johnson + . + + * configure.ac (AC_INIT): Update to 1.875e. + +2004-05-21 Paul Eggert + + * NEWS: Version 1.875d. + * configure.ac (AC_INIT): Likewise. + * src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875d. + + * configure.ac (--enable-gcc-warnings): Do not enable -Wshadow, + -Wmissing-prototypes, or -Wstrict-prototypes for C++. The current + lalr1.cc runs afoul of the first, and the last two are no longer + supported by GCC 3.4.0. + * README: Mention GNU m4 1.4 or later; mention m4 patches. + * HACKING: Use ./bootstrap, not "make update" to import foreign files. + +2004-05-06 Paul Eggert + + * src/muscle_tab.c (hash_muscle): Accept and return size_t, not + unsigned int, for compatibility with latest gnulib hash module. + * src/state.c (state_hash, state_hasher): Likewise. + * src/symtab.c (hash_symbol, hash_symbol_hasher): Likewise. + * src/uniqstr.c (hash_uniqstr): Likewise. + +2004-05-03 Paul Eggert + + * NEWS: Unescaped newlines are no longer allowed in char & strings. + + * src/scan-gram.l (): Reject unescaped newlines in + character and string literals. + (unexpected_end): New function. + (unexpected_eof): Use it. + (unexpected_newline): New function. + (): Coalesce duplicate + actions. + + * NEWS: Document %expect-rr. + + * bootstrap (--gnulib-srcdir=*, --cvs-user=*): + Fix typo by replacing $1 with $option. + Remove more 'intl'-related files. + Don't DEFUN AM_INTL_SUBDIR twice. + + * lib/.cvsignore: Add strndup.h. Remove memchr.c, memcmp.c, + memrchr.c, strcasecmp.c, strchr.c, strrchr.c, strspn.c, strtol.c, + strtoul.c. + * m4/.cvsignore: Add exitfail.m4, extensions.m4, gnulib.m4, + hard-locale.m4, mbstate_t.m4, strerror_r.m4, strndup.m4, + xstrndup.m4. Remove glibc21.m4, intdiv0.m4, inttypes-pri.m4, + inttypes.m4, inttypes_h.m4, isc-posix.m4, lcmessage.m4, + stdint_h.m4, uintmax_t.m4, ulonglong.m4. + * src/.cvsignore: Add *.output. + + * src/parse-gram.y: Put copyright notice inside %{ %} so it + gets copied to the output file. + +2004-04-28 Paul Eggert + + Get files from the gnulib and po repositories, instead of relying + on them being in our CVS. Upgrade to latest versions of gnulib + and Automake. + + * Makefile.am (SUBDIRS): Remove m4; Automake now does m4. + * bootstrap: Bootstrap from gnulib and po repositories. + Much of this code was stolen from GNU diff and GNU tar's bootstrap. + * README-cvs: Document these changes. Remove version numbers from + mentions of build tools, since they change so often. Mention Flex. + + * configure.ac (AC_CONFIG_MACRO_DIR): Add, with m4 as arg. + (gl_USE_SYSTEM_EXTENSIONS): Add. + (AC_GNU_SOURCE, AC_AIX, AC_MINIX): + Remove; no longer needed, as gl_USE_SYSTEM_EXTENSIONS + does this for us. + (AC_ISC_POSIX): Remove; we no longer support this + ancient OS, as it gets in the way of latest Autoconf & gnulib. + (AC_HEADER_STDC): Remove: we now assume C89 or better. + (AC_CHECK_HEADERS_ONCE): Use instead of AC_CHECK_HEADERS. + Do not check for C89 headers, except for locale.h which is used + by the Yacc library and must port to K&R hosts. + (AC_CHECK_FUNCS_ONCE): Use instead of AC_CHECK_FUNCS. + Do not check for C89 functions, except for setlocale which is + used by the Yacc library. + (AC_CHECK_DECLS, AC_REPLACE_FUNCS): Remove; no longer needed. + (gl_DIRNAME, gl_ERROR, gl_FUNC_ALLOCA, gl_FUNC_MEMCHR, + gl_FUNC_MEMRCHR, gl_FUNC_STPCPY, gl_FUNC_STRNLEN, gl_FUNC_STRTOL, + gl_GETOPT, gl_HASH, gl_MBSWIDTH, gl_OBSTACK, gl_QUOTE, + gl_QUOTEARG, gl_XALLOC, jm_FUNC_GLIBC_UNLOCKED_IO, jm_FUNC_MALLOC, + AM_GNU_GETTEXT): Remove; now done by: + (GNULIB_AUTOCONF_SNIPPET): Add. "bootstrap" builds this for us. + (AC_CONFIG_FILES): Remove m4/Makefile, as Automake now does this + for us. + + * lib/Makefile.am: Include gnulib.mk, built for us by "bootstrap". + (BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES): + Define to empty, as gnulib.mk will do the rest for us. + ($(libbison_a_OBJECTS), stdbool.h): Remove, as gnulib.mk does this + for us. + (libbison_a_SOURCES): Define to $(lib_SOURCES) now. + (lib_SOURCES): New symbol, containing only the non-gnulib libs. + + * src/files.c: Include gnulib's xstrndup.h. + + * src/system.h (MALLOC): Use xnmalloc, for better overflow checking. + (REALLOC): Use xnrealloc, for likewise. + (xstrndup, stpcpy): Remove decls, as gnulib does this for us now. + (strnlen, memrchr): Remove decls; functions no longer used. + Include . + + * config/depcomp, config/install-sh, lib/alloca.c, lib/argmatch.c, + lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h, + lib/error.c, lib/error.h, lib/getopt.c, lib/getopt.h, + lib/getopt1.c, lib/gettext.h, lib/hash.c, lib/hash.h, + lib/malloc.c, lib/mbswidth.c, lib/mbswidth.h, lib/memchr.c, + lib/memcmp.c, lib/memrchr.c, lib/obstack.c, lib/obstack.h, + lib/quote.c, lib/quote.h, lib/quotearg.c, lib/quotearg.h, + lib/realloc.c, lib/stdbool_.h, lib/stpcpy.c, lib/strcasecmp.c, + lib/strchr.c, lib/strncasecmp.c, lib/strnlen.c, lib/strrchr.c, + lib/strspn.c, lib/strtol.c, lib/strtoul.c, lib/unlocked-io.h, + lib/xalloc.h, lib/xmalloc.c, lib/xstrdup.c, lib/xstrndup.c, + m4/Makefile.am, m4/alloca.m4, m4/dirname.m4, m4/dos.m4, + m4/error.m4, m4/getopt.m4, m4/hash.m4, m4/malloc.m4, + m4/mbrtowc.m4, m4/mbswidth.m4, m4/memchr.m4, m4/memcmp.m4, + m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/prereq.m4, + m4/quote.m4, m4/quotearg.m4, m4/realloc.m4, m4/stdbool.m4, + m4/stpcpy.m4, m4/strnlen.m4, m4/strtol.m4, m4/strtoul.m4, + m4/unlocked-io.m4, m4/xalloc.m4, po/LINGUAS, po/Makefile.in.in, + po/Makevars, po/da.po, po/de.po, po/es.po, po/et.po, po/fr.po, + po/hr.po, po/id.po, po/it.po, po/ja.po, po/ms.po, po/nl.po, + po/pt_BR.po, po/ro.po, po/ru.po, po/sv.po, po/tr.po: + Remove, as these files are now generated automatically + by bootstrap or automake. + + * po/ChangeLog: Remove: all but one entry was a duplicate + of this file, and I moved that 2000-11-02 entry here. + + * config/.cvsignore: Add Makefile, depcomp, install-sh. + * lib/.cvsignore: Add alloca.c, alloca.h, alloca_.h, argmatch.c, + argmatch.h, basename.c, dirname.c, dirname.h, error.c, error.h, + exit.h, exitfail.c, exitfail.h, getopt.c, getopt.h, getopt1.c, + getopt_int.h, gettext.h, gnulib.mk, hard-locale.c, hard-locale.h, + hash.c, hash.h, malloc.c, mbswidth.c, mbswidth.h, memchr.c, + memcmp.c, memrchr.c, obstack.c, obstack.h, quote.c, quote.h, + quotearg.c, quotearg.h, realloc.c, stdbool_.h, stpcpy.c, stpcpy.h, + strcasecmp.c, strchr.c, stripslash.c, strncasecmp.c, strndup.c, + strnlen.c, strrchr.c, strspn.c, strtol.c, strtoul.c, + unlocked-io.h, xalloc.h, xmalloc.c, xstrdup.c, xstrndup.c, + xstrndup.h. + * m4/.cvsignore: Remove Makefile, Makefile.in. Add alloca.m4, + dirname.m4, dos.m4, error.m4, getopt.m4, hash.m4, mbrtowc.m4, + mbswidth.m4, obstack.m4, onceonly.m4, quote.m4, quotearg.m4, + stdbool.m4, stpcpy.m4, strnlen.m4, unlocked-io.m4, xalloc.m4. + * po/.cvsignore: Add *.po, LINGUAS, Makefile.in.in, Makevars. + * src/.cvsignore: Remove *_.c. + + + * Makefile.maint (GZIP_ENV): Don't use --rsyncable if gzip doesn't + support it. (The latest stable gzip doesn't.) + +2004-04-27 Paul Eggert + + * data/lalr1.cc (Parser::stos_) [! YYDEBUG]: Define even in this + case, as stos_ is now used by destructors due to the 2004-02-09 + change. + + Remove more K&R C support. + * lib/libiberty.y (PARAMS): Remove. All uses removed. + * lib/subpipe.c (errno): Remove decl. + Include unconditionally. + (EXIT_FAILURE): Remove macro. + * src/complain.c (vfprintf, strerror): Remove. + * src/system.h: Include limits.h, stdlib.h, string.h, locale.h + unconditionally. + (EXIT_FAILURE, EXIT_SUCCESS, setlocale): Remove defns. + Use latest Autoconf recommendations for including inttypes.h, stdint.h. + (strchr, strspn, memchr): Remove decls. + * tests/calc.at (_AT_DATA_CALC_Y): Include stdlib.h, string.h + unconditionally. Do not declare perror. + * tests/conflicts.at (%nonassoc and eof): Include stdlib.h + unconditionally. + + * src/complain.c (_): Remove useless defn, as system.h defines this. + + * lib/bitset.h (__INT_TO_PTR): Remove; workaround no longer needed + with latest obstack.h. + * lib/ebitset.c (ebitset_elt_alloc): Don't bother to cast args + to procedure types, as obstack.h now does that for us. + * lib/lbitset.c (lbitset_elt_alloc): Likewise. + + * lib/subpipe.h [HAVE_SYS_TYPES_H]: Include , + so that this include file can stand alone. + * lib/subpipe.c: Do not include , as subpipe.h + does this now. Include subpipe.h first after config.h, to + test whether it can stand alone. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't + declare yyerror when using lalr.cc, as GCC 3.4.0 warns about the + unused declaration. + + * tests/synclines.at (%union synch line): Put a dummy member in + the union, because empty unions aren't allowed in C. Caught + by GCC 3.4.0. + +2004-04-13 Jim Meyering + + * src/conflicts.c (conflicts_print): Correct format string typo: + use `%%' to produce literal `%'. (trivial change) + +2004-03-30 Paul Eggert + + * src/getargs.c (version): Update copyright year to 2004. + + * data/c.m4 (b4_int_type): Use 'short int' rather than + 'short', and similarly for 'long', 'unsigned', etc. + * data/glr.c (YYTRANSLATE, yyconfl, yySymbol, yyItemNum, + yygetLRActions, yyprocessOneStack, yyrecoverSyntaxError, + yy_yypstack, yydumpstack): Likewise. + * data/lalr1.cc (user_token_number_max_, user_token_number_max_, + translate_, seq_, [], pop, Slice, range_, operator+, operator+=): + Likewise. + * data/yacc.c (b4_int_type, yyss, YYSTACK_BYTES, yysigned_char, + yy_stack_print, yyparse): Likewise. + * doc/bison.texinfo (Prologue, Multiple Types): Likewise. + * lib/bbitset.h (bitset_word, BITSET_WORD_BITS): Likewise. + * lib/bitset.c (bitset_print): Likewise. + * lib/bitset_stats.c (bitste_log_histogram_print): Likewise. + * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise. + * lib/bitsetv.c (bitsetv_dump): Likewise. + * lib/ebitset.c (EBITSET_ELT_BITS, ebitset_elt_alloc): Likewise. + * lib/lbitset.c (LBITSET_ELT_BITS, lbitset_elt_alloc, debug_lbitset): + Likewise. + * src/LR0.c (allocate_itemsets): Likewise. + * src/gram.h (rule_number, rule): Likewise. + * src/lalr.h (goto_number): Likewise. + * src/nullable.c (nullable_compute): Likewise. + * src/output.c (prepare_rules): Likewise. + * src/relation.c (relation_print, relation_digraph): Likewise. + * src/relation.h (relation_node): Likewise. + * src/state.h (state_number, transitions, errs, reductions, + struct state): Likewise. + * src/symtab.h (symbol_number, struct symbol): Likewise. + * src/tables.c (vector_number, tally, action_number, + default_goto, goto_actions): Likewise. + * tests/existing.at (GNU Cim Grammar): Likewise. + * tests/regression.at (Web2c Actions): Likewise. + + * src/output.c (muscle_insert_short_int_table): Renamed from + muscle_insert_short_table. All uses changed. + +2004-03-25 Paul Hilfinger + + * src/parse-gram.y: Define PERCENT_EXPECT_RR. + (declaration): Replace expected_conflicts with expected_sr_conflicts. + Add %expect-rr rule. + + * src/scan-gram.l: Recognize %expect-rr. + + * src/conflicts.h (expected_sr_conflicts): Rename from + expected_conflicts. + (expected_rr_conflicts): Declare. + + * src/conflicts.c (expected_sr_conflicts): Rename from + expected_conflicts. + (expected_rr_conflicts): Define. + (conflicts_print): Check r/r conflicts against expected_rr_conflicts + for GLR parsers. + Use expected_sr_conflicts in place of expected_conflicts. + Warn if expected_rr_conflicts used in non-GLR parser. + + * doc/bison.texinfo: Add documentation for %expect-rr. + +2004-03-08 Paul Eggert + + Add support for hex token numbers. Suggested by Odd Arild Olsen in + . + + * NEWS: Document hexadecimal tokens, no NUL bytes, %destructor + in lalr1.cc. + * doc/bison.texinfo (Token Decl): Add hexadecimal token numbers. + * src/scan-gram.l (scan_integer): New function. + ({int}): Use it. + (0[xX][0-9abcdefABCDEF]+): New pattern, to support hex numbers. + (, \\x[0-9abcdefABCDEF]+, + handle_action_dollar, handle_action_at, convert_ucn_to_byte): + Say "long int", not "long", for uniformity with GNU style. + +2004-02-25 Paul Eggert + + * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Ignore stdout from + compilers. This fixes a problem with Intel's C++ compiler being + chatty, reported by Guido Trentalancia in + . + +2004-02-09 Alexandre Duret-Lutz + + Support %destructor and merge error locations in lalr1.cc. + + * data/lalr1.cc (b4_cxx_destruct_def): New macro. + (Parser::stos_): Define unconditionally. + (Parser::destruct_): New method. Generate its body with + b4_yydestruct_generate. + (Parser::error_start_): New attribute. + (Parser::parse) : Call destruct_ on erroneous + token which are discarded. + (Parser::parse) : Update + error_start_ when erroneous token are discarded. + (Parser::parse) : Compute the location of the error + token so that it covers all the discarded tokens. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust so + it can be called with `%skeleton "lalr1.cc"', and do that. + +2004-02-02 Paul Eggert + + * src/Makefile.am (AM_CPPFLAGS): New macro. It mentions + $(top_srcdir)/lib and ../lib. This fixes a bug reported + by Paul Hilfinger; the old INCLUDES value didn't mention ../lib. + There's no need to mention top_builddir since Automake does that + for us. + (INCLUDES): Remove, as Automake says it's obsolescent. + Contents migrated into AM_CPPFLAGS as described above. + * lib/Makefile.am (INCLUDES): Remove; obsolescent. + +2004-01-14 Paul Hilfinger + + * data/glr.c (yytokenName): Bullet-proof against YYEMPTY token. + (yyreportSyntaxError): Handle case where lookahead token is + YYEMPTY. + +2004-01-13 Paul Hilfinger + + * data/glr.c: Put casts on uses of YYREALLOC and YYMALLOC so that + resulting parsers are compilable with C++. + +2003-12-23 Paul Eggert + + * config/depcomp, config/install-sh: Sync with Automake 1.8. + * src/output.c (output_skeleton): Rename local var. + * tests/input.at (Torturing the Scanner): Don't use \x0 or \0 in + Bison tokens, as this runs afoul of the 2003-10-07 change that + disallowed NUL bytes in character constants or string literals. + + * tests/local.at: Require Autoconf 2.59's Autotest. + * tests/testsuite.at: Don't include local.at, since we now assume + Autoconf 2.59 or later. Autoconf 2.59 had some problems with + including it. + * tests/Makefile.am ($(TESTSUITE)): Remove warning about ignoring + multiple inclusion warnings. + +2003-12-02 Akim Demaille + + * doc/bison.texinfo (How Can I Reset the Parser): More about start + conditions. + From Bruno Haible. + +2003-11-18 Alexandre Duret-Lutz + + * doc/bison.texinfo (Bison Options): Escape `@' in `$@'. + +2003-10-07 Paul Eggert + + * tests/Makefile.am (clean-local): Don't run 'testsuite --clean' + if testsuite doesn't exist. + + * doc/bison.texinfo (Symbols): NUL bytes are not allowed in string + literals, unfortunately. + * src/scan-gram.l (): + Complain about NUL bytes in character constants or string literals. + +2003-10-05 Paul Eggert + + * NEWS: Don't document %no-default-prec, as it's still + too experimental. + * doc/bison.texinfo: Document %no-default-prec only if + the defaultprec flag is set. Normally it's not. + +2003-10-04 Paul Eggert + + * data/glr.c (b4_rhs_value, b4_rhs_location): Yield a + non-modifiable lvalue, instead of a modifiable one. + * doc/bison.texinfo (Actions): Document that $$ can + be assigned to. Do not claim that $$ and $N are + array element references: user code should not rely on this. + +2003-10-01 Paul Eggert + + * src/parse-gram.h (PERCENT_NO_DEFAULT_PREC): New token. + (grammar_declaration): Use it. + * src/scan-gram.l: New token %no-default-prec. + * tests/conflicts.at: Revamp tests to use %no-default-prec. + * NEWS, doc/bison.texinfo: Document the above. + +2003-10-01 Akim Demaille + + VCG no longer supports long_straight_phase. + + * src/vcg.c, src/vcg.h: Remove the handling of long_straight_phase. + * src/print_graph.c (print_graph): Adjust. + +2003-09-30 Frank Heckenbach + and Paul Eggert + + * doc/bison.texinfo (Decl Summary, Contextual Precedence, + Table of Symbols): Document %default-prec. + * src/parse-gram.y (PERCENT_DEFAULT_PREC): New token. + (grammar_declaration): Set default_prec on %default-prec. + * src/scan-gram.l (%default-prec): New token. + * src/reader.h (default_prec): New flag. + * src/reader.c: Likewise. + (packgram): Handle it. + * tests/conflicts.at (%default-prec without %prec, + %default-prec with %prec, %default-prec 1): New tests. + +2003-09-30 Paul Eggert + + * tests/testsuite.at: Include local.at, not input.at, fixing + a typo in the 2003-08-25 patch. + +2003-08-27 Akim Demaille + + * data/lalr1.cc (yyparse) [__GNUC__]: "Use" yyerrorlab to pacify + GCC warnings. + +2003-08-26 Akim Demaille + + * config/announce-gen (print_changelog_deltas): Neutralize "<#" as + "<\#" to avoid magic from Gnus when posting parts of this script. + +2003-08-26 Akim Demaille + + * data/lalr1.cc (Parser::report_syntax_error_): New, extracted from + (Parser::parse): here. + Adjust: nerrs and errstatus is now replaced by... + (Parser::nerrs_, Parser::errstatus_): New. + +2003-08-25 Akim Demaille + + * config/announce-gen, Makefile.cfg: New. + * Makefile.am: Adjust. + * GNUmakefile, Makefile.maint: Update from CVS Autoconf, but + keeping local WGET and WGETFLAGS modifications from Paul Eggert. + +2003-08-25 Akim Demaille + + When reducing initial empty rules, Bison parser read an initial + location that is not defined. This results in garbage, and that + affects Bison's own parser. Therefore we need (i) to extend Bison + to support a means to initialize this location, and (ii) to use + this CVS Bison to fix CVS Bison's parser. + + * src/reader.h, reader.c (epilogue_augment): Remove, replace + with... + * src/muscle_tab.h, src/muscle_tab.c (muscle_code_grow): this. + * src/parse-gram.y: Adjust. + (%initial-action): New. + (%error-verbose): Since we require CVS Bison, there is no reason + not to use it. + * src/scan-gram.l: Adjust. + * src/Makefile.am (YACC): New, to make sure we use our own parser. + * data/yacc.c (yyparse): Use b4_initial_action. + +2003-08-25 Akim Demaille + + * doc/bison.texinfo: Don't promote stdout for error messages. + +2003-08-25 Akim Demaille + + * data/lalr1.cc (Parser::reduce_print_): Remove unused yyi. + From Alexandre Duret-Lutz. + +2003-08-25 Akim Demaille + + Version 1.875c. + +2003-08-25 Akim Demaille + + * data/lalr1.cc (Parser::stack_print_, YY_STACK_PRINT): New. + Use them. + +2003-08-25 Akim Demaille + + * data/lalr1.cc (Parser::reduce_print_): New. + Use it. + +2003-08-25 Akim Demaille + + Have lalr1.cc catch with Paul Eggert's patch to fix the infinite + error recovery loops. This patch is based on + . + Also, augment the similarity between lalr1.cc and yacc.c. + Note: the locations of error recovery rules are not correct yet. + + * data/lalr1.cc: Comment changes to augment the similarity between + lalr1.cc and yacc.c. + (YYERROR): Goto to yyerrorlab, not yyerrlab1. + (yyerrlab1): Remove, but where it used to be (now the bottom part of + yyerrlab), when hitting EOF, pop the whole stack here instead of + merely falling thru the default error handling mechanism. + (yyerrorlab): New label, with the old contents of YYERROR, + plus the following change: pop the stack of rhs corresponding + to the production that invoked YYERROR. That is how Yacc + behaves (required by POSIX). + * tests/calc.at (AT_CHECK_CALC_LALR1_CC): No longer expected to + fail. + +2003-08-25 Akim Demaille + + Tune local.at so that people can "autom4te -l autotest calc.at -o + calc" for instance, to extract a sub test suite. + + * tests/testsuite.at: Move the initialization, Autotest version + requirement, and AT_TESTED invocation into... + * tests/local.at: here. + * tests/testsuite.at: Include it for compatibility with Autoconf + 2.57. + * tests/Makefile.am ($(TESTSUITE)): Report that the warning should + be ignore. + +2003-08-04 Paul Eggert + + Rework code slightly to avoid gcc -Wtraditional warnings. + * data/glr.c (yyuserMerge): Return void, not YYSTYPE. + The returned value is now stored in *YY0. All callers changed. + * src/output.c (merge_output): Adjust to the above change. + +2003-07-26 Paul Eggert + + * data/glr.c (YYASSERT): New macro. + (yyfillin, yydoAction, yyglrReduce, yysplitStack, + yyresolveStates, yyprocessOneStack): + Use `YYASSERT (FOO);' rather than `if (! (FOO)) abort ();'. + Derived from a suggestion by Frank Heckenbach. + +2003-07-25 Paul Eggert + + * data/glr.c (yyglrReduce): Don't use C89 string concatenation, + for portability to K&R C (after ansi2knr, presumably). See + + by Frank Heckenbach, though I have omitted the structure-initialization + part of his glr-knr.diff patch since I recall that the Portable + C Compiler didn't require that change. + + Let the user specify how to allocate and free memory. + Derived from a suggestion by Frank Heckenbach in + . + * data/glr.c (YYFREE, YYMALLOC, YYREALLOC): New macros. + All uses of free, malloc, realloc changed to use these macros, + and unnecessary casts removed. + * data/yacc.c (YYFREE, YYMALLOC): Likewise. + +2003-07-06 Matthias Mann + + * data/lalr1.cc (operator<<(std::ostream&, const Position&)): + use s.empty() rather than s == "" to test for empty string; see + + (trivial change) + +2003-06-25 Akim Demaille + + * config/depcomp, config/install-sh: Update from masters. + +2003-06-20 Paul Eggert + + * data/glr.c (YYLLOC_DEFAULT): Parenthesize arguments as needed, + and return properly parenthesized result. + * data/lalar1.cc (YYLLOC_DEFAULT): Likewise. + * data/yacc.c (YYLLOC_DEFAULT): Likewise. + Remove unnecessary parentheses from uses. + * doc/bison.texinfo (Location Default Action): Describe the + conventions for parentheses. + +2003-06-19 Paul Eggert + + * data/glr.c (yyremoveDeletes, yy_reduce_print, yyglrReduce, + yyreportTree): Do not assume that size_t is the same width as int, + when printing sizes. Print sizes using an unsigned format. + Problem reported by Frank Heckenbach in + . + + Port to Forte Developer 7 C compiler. + * data/glr.c (struct YYLTYPE): If locations are not being used, + declare a single dummy member, as empty structs do not conform + to the C standard. + (YYERROR, YYBACKUP): Do not use "do { ...; return foo; } while (0)"; + the Forte Developer 7 C compiler complains that end-of-loop + code is not reached. + +2003-06-17 Paul Eggert + + * lib/libiberty.h (PARAMS): Spell argument as Args, not as X, to + avoid warnings from picky compilers about redefinition of PARAMS. + +2003-06-17 Paul Eggert + + Version 1.875b. + + * NEWS: Document 1.875b. + + * lib/bbitset.h: Do not include config.h; that's the includer's job. + Do not include ; shouldn't be needed on a C89 host. + * lib/bitset.h (bitset_compatible_p): Indent as per GNU standard. + Don't use 'index' in comments, as it's a builtin fn on some hosts. + * lib/bitset_stats.c: Include gettext.h unconditionally, as + per recent gettext manual's suggestion. + * lib/ebitset.c (ebitset_resize, ebitset_unused_clear): + Use prototypes, not old-style definitions. + * lib/lbitset.c (lbitset_unused_clear): Likewise. + * lib/vbitset.c (vbitset_resize, vbitset_ones, vbitset_zero, + vbitset_empty_p, vbitset_copy1, vbitset_not, vbitset_equal_p, + vbitset_subset_p, vbitset_disjoint_p, vbitset_and, vbitset_and_cmp, + vbitset_andn, vbitset_andn_cmp, vbitset_or, vbitset_or_cmp, + vbitset_xor, vbitset_xor_cmp, vbitset_and_or, vbitset_and_or_cmp, + vbitset_andn_or, vbitset_andn_or_cmp, vbitset_or_and, + vbitset_or_and_cmp, vbitset_copy): Likewise. + + * lib/libiberty.h: Do not include config.h; that's the includer's job. + Do not include . + (PARAMS): Define unconditionally for C89. + (ATTRIBUTE_NORETURN): Remove. + (ATTRIBUTE_UNUSED): Define unconditionally. + + Upgrade to 2003-06-08 libbitset, submitted by Michael Hayes in: + + * lib/Makefile.am (bitsets_sources): Add vbitset.c, vbitset.h. + * lib/vbitset.c, lib/vbitset.h: New files. + * lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h, + lib/bitset_stats.c, lib/ebitset.c, lib/lbitset.c: Import + from libbitset. + + * doc/bison.texinfo (How Can I Reset the Parser): Renamed from + `How Can I Reset @code{yyparse}', since texinfo does not allow + arbitrary @ in node names. + + * m4/Makefile.am (EXTRA_DIST): Add the following files, which + shouldn't be needed according to the gettext 0.12.1 documentation + but which seem to be needed anyway: codeset.m4 glibc21.m4 + intdiv0.m4 inttypes-pri.m4 inttypes.m4 inttypes_h.m4 isc-posix.m4 + lcmessage.m4 nls.m4 po.m4 stdint_h.m4 uintmax_t.m4 ulonglong.m4. + * po/Makefile.in.in: Upgrade to gettext 0.12.1 version. + + * lib/.cvsignore: Add stdbool.h. + * m4/.cvsignore: Add nls.m4, po.m4. + + Upgrade to CVS gnulib. + * stdbool_.h: File renamed from stdbool.h.in. + * configure.ac (AM_STDBOOL_H): Invoke this instead of + AC_HEADER_STDBOOL. + (AM_GNU_GETTEXT): Put brackets around args, as latest manual suggests. + (AM_GNU_GETTEXT_VERSION): Update to 0.12.1. + * lib/Makefile.am (EXTRA_DIST): Add stdbool_.h. + (MOSTLYCLEANFILES): New var. + ($(libbison_a_OBJECTS)): Depend on $(STDBOOL_H). + (stdbool.h): New rule. + * lib/dirname.c, lib/dirname.h, lib/hash.c, lib/hash.h, + lib/malloc.c, lib/obstack.h, lib/quote.c, lib/realloc.c, + lib/strcasecmp.c, lib/xalloc.h, m4/alloca.m4, m4/onceonly.m4, + m4/quote.m4: Upgrade to today's gnulib. + + * tests/calc.at (AT_CHECK_CALC): New option EXPECTED-TO-FAIL. + (AT_CHECK_CALC_LALR1_CC): Use it, since the C++ LALR parser fails + the tests right now. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Ensure yylex and + yyerror are declared before use; C99 requires this. + +2003-06-09 Paul Hilfinger + + * data/glr.c (YYERROR): Update definition to reset yyerrState to 0 + first. + (yyrecoverSyntaxError): Correct the logic for setting and testing + yyerrState. + Correct comment on handling EOF. + Allow states with only a default reduction, rather than failing + (I can't quite reconstruct why these were not allowed before). + + Fixes to avoid problem that $-N rules in GLR parsers can cause + buffer overruns, corrupting state. + + * src/output.c (prepare_rules): Output max_left_semantic_context + definition. + * src/reader.h (max_left_semantic_context): New variable declaration. + * src/scan-gram.l (max_left_semantic_context): Define. + (handle_action_dollar): Update max_left_semantic_context. + * data/glr.c (YYMAXLEFT): New definition. + (yydoAction): Increase size of yyrhsVals by YYMAXLEFT. + (yyresolveAction): Ditto. + + Fixes to problems with location handling in GLR parsers reported by + Frank Heckenbach (2003/06/05). + + * data/glr.c (YYLTYPE): Make trivial if locations not used. + (YYRHSLOC): Add parentheses, and define only if locations used. + (YYLLOC_DEFAULT): Add parentheses, and give trivial definition if + locations not used. + (yyuserAction): Use YYLLOC_DEFAULT to set *yylocp. + (yydoAction): Remove redundant initialization of *yyvalp and *yylocp. + + * tests/cxx-type.at: Exercise location information; update tests + to differentiate output with and without locations. + Remove forward declarations of yylex and yyerror---caused errors + because default YYLTYPE not yet defined. + Change semantic actions to compute strings, rather than printing + them directly (to test proper passing of semantics values). Change + output to prefix notation and update test data and expected results. + (yylex): Track locations. + (stmtMerge): Return value rather than printing, and include arguments + in value. + +2003-06-03 Paul Eggert + + Avoid warnings generated by GCC 2.95.4 when Bison is + configured with --enable-gcc-warnings. + * data/lalr1.cc (yy::]b4_parser_class_name[::parse, + yy::]b4_parser_class_name[::translate_, + yy::Stack::operator[] (unsigned), + yy::Stack::operator[] (unsigned) const, + yy::Slice::operator[] (unsigned), + yy::Slice::operator[] (unsigned) const): + Rename local vars to avoid warnings. + * tests/glr-regression.at (Improper handling of embedded actions + and $-N in GLR parsers): Remove unused local variable from yylex. + * tests/regression.at (_AT_DATA_DANCER_Y): Declare yylex to take + (void) as arg when not pure, since we now assume C89 when building + Bison. Pacify GCC by using parameter. + +2003-06-02 Paul Eggert + + * data/lalr1.cc (yy::Position::lines, yy::Position::columns, + yy::Location::lines, yy::Location::columns): Rename arguments + to avoid shadowing; this removes a warning generated by GCC 3.3. + +2003-06-01 Paul Eggert + + Don't pass C-only warning optins (e.g., -Wmissing-declarations) + to g++, as GCC 3.3 complains if you do it. + * configure.ac (WARNING_CXXFLAGS): New subst. Set it to + everything that WARNING_CFLAGS has, except omit warnings + not suitable for C++. + (AC_PROG_CXX): Use this instead of AC_CHECK_PROGS([CXX], [g++]). + * tests/atlocal.in (CXXFLAGS): New var. + * tests/local.at (AT_COMPILE_CXX): Use it instead of CFLAGS. + + Fix a GLR parser bug I reported in February; see + . + The problem was that GLR parsers did not conform to the C standard, + because actions like { $1 = $2 + $3; } expanded to expressions + that invoked YYFILL in separate subexpressions, and YYFILL assigned + to a local variable. The C standard says that expressions + like (var = f ()) + (var = f ()) have undefined behavior. + Another problem was that GCC sometimes issues warnings that + yyfill and its parameters are unused. + + * data/glr.c (yyfillin): Renamed from the old yyfill. Mark + as possibly unused. + (yyfill): New function. + (YYFILL): Use it. + (yyuserAction): Change type of yynormal to bool, so that it matches + the new yyfill signature. Mark it as possibly unused. + + + Follow up on a bug I reported in February, where a Bison-generated + parser can loop. Provide a test case and a fix for yacc.c. I + don't have a fix for lalr1.cc or for glr.c, unfortunately. + The original bug report is in: + + + * data/yacc.c (YYERROR): Now just 'goto yyerrorlab', since the + macro's size was becoming unwieldy. + (yyerrlab): Do not discard an empty lookahead symbol, as this + might destroy garbage. + (yyerrorlab): New label, with the old contents of YYERROR, + plus the following change: pop the stack of rhs corresponding + to the production that invoked YYERROR. That is how Yacc + behaves, and POSIX requires this behavior. + (yyerrlab1): Use YYPOPSTACK instead of its definiens. + * tests/calc.at (_AT_DATA_CALC_Y): Include unistd.h if available. + Define 'alarm' to do nothing if unistd.h is not available. + Add a new rule "exp: '-' error;" to test the above change to + data/yacc.c. Use 'alarm' to abort any test taking longer than + 10 seconds, as it's probably looping. + (AT_CHECK_CALC): Test recovery from error in new grammar rule. + Also, the new yacc.c generates two fewer diagnostics for an + existing test. + +2003-05-24 Paul Eggert + + * data/glr.c (YYSTACKEXPANDABLE): Do not evaluate + YYSTYPE_IS_TRIVIAL or YYSTYPE_IS_TRIVIAL unless they are defined. + This fixes a problem reported by John Bowman when the Compaq/HP + Alpha cxx compiler happy (e.g. using cxx -D__USE_STD_IOSTREAM + -ansi -Wall -gall). + * data/yacc.c (union yyalloc): Likewise. + (YYCOPY): Do not evaluate __GNUC__ unless it is defined. + + Switch from 'int' to 'bool' where that makes sense. + + * lib/abitset.c (abitset_test, abitset_empty_p, abitset_equal_p, + abitset_subset_p, abitset_disjoint_p, abitset_and_cmp, + abitset_andn_cmp, abitset_or_cmp, abitset_xor_cmp, abitset_and_or, + abitset_and_or_cmp, abitset_andn_or_cmp, abitset_or_and_cmp): + Return or accept bool, not int. All callers changed. + * lib/bbitset.h: (bitset_toggle_, bitset_copy_, bitset_and_or_cmp_, + bitset_andn_or_cmp_, bitset_or_and_cmp_): Likewise. + * lib/bitset.c (bitset_only_set_p, bitset_print, bitset_toggle_, + bitset_copy_, bitset_op4_cmp, bitset_and_or_cmp_, bitset_andn_or_cmp_, + bitset_or_and_cmp_): Likewise. + * lib/bitset.h (bitset_test, bitset_only_set_p): Likewise. + * lib/bitset_stats.c (bitset_stats_print, bitset_stats_toggle, + bitset_stats_test, bitset_stats_empty_p, bitset_stats_disjoint_p, + bitset_stats_equal_p, bitset_stats_subset_p, bitset_stats_and_cmp, + bitset_stats_andn_cmp, bitset_stats_or_cmp, bitset_stats_xor_cmp, + bitset_stats_and_or_cmp, bitset_stats_andn_or_cmp, + bitset_stats_or_and_cmp): Likewise. + * lib/ebitset.c (ebitset_elt_zero_p, ebitset_equal_p, ebitset_copy_cmp, + ebitset_test, ebitset_empty_p, ebitset_subset_p, ebitset_disjoint_p, + ebitset_op3_cmp, ebitset_and_cmp, ebitset_andn_cmp, ebitset_or_cmp, + ebitset_xor_cmp): Likewise. + * lib/lbitset.c (lbitset_elt_zero_p, lbitset_equal_p, lbitset_copy_cmp, + lbitset_test, lbitset_empty_p, lbitset_subset_p, lbitset_disjoint_p, + lbitset_op3_cmp, lbitset_and_cmp, lbitset_andn_cmp, lbitset_or_cmp, + lbitset_xor_cmp): Likewise. + * lib/bbitset.h: Include . + (struct bitset_vtable): The following members now return bool, not + int: toggle, test, empty_p, disjoint_p, equal_p, subset_p, + and_cmp, andn_cmp, or_cmp, xor_cmp, and_or_cmp, andn_or_cmp, + or_and_cmp). + * src/conflicts.c (count_rr_conflicts): Likewise. + * lib/bitset_stats.h (bitset_stats_enabled): Now bool, not int. + All uses changed. + * lib/ebitset.c (ebitset_obstack_init): Likewise. + * lib/lbitset.c (lbitset_obstack_init): Likewise. + * src/getargs.c (debug_flag, defines_flag, locations_flag, + no_lines_flag, no_parser_flag, token_table_flag, yacc_flag, + graph_flag): Likewise. + * src/getargs.h (debug_flag, defines_flag, locations_flag, + no_lines_flag, no_parser_flag, token_table_flag, yacc_flag, + graph_flag): Likewise. + * src/output.c (error_verbose): Likewise. + * src/output.h (error_verbose): Likewise. + * src/reader.c (start_flag, typed): Likewise. + * src/reader.h (typed): Likewise. + * src/getargs.c (LOCATIONS_OPTION): New constant. + (long_options, getargs): Use it. + * src/lalr.c (build_relations): Use bool, not int. + * src/nullable.c (nullable_compute): Likewise. + * src/print.c (print_reductions): Likewise. + * src/tables.c (action_row, pack_vector): Likewise. + * src/muscle_tab.h (MUSCLE_INSERT_BOOL): New macro. + * src/output.c (prepare): Use it. + * src/output.c (token_definitions_output, + symbol_destructors_output, symbol_destructors_output): Use string, + not boolean integer, to keep track of whether to output separator. + * src/print_graph.c (print_core): Likewise. + * src/state.c (state_rule_lookaheads_print): Likewise. + + * config/install-sh: Sync from automake 1.7.5. + +2003-05-14 Paul Eggert + + * src/parse-gram.y (rules_or_grammar_declaration): Require a + semicolon after a grammar declaration, in the interest of possible + future changes to the Bison input language. + Do not allow a stray semicolon at the start of the grammar. + (rhses.1): Allow one or more semicolons after any rule, including + just before "|" as required by POSIX. + * tests/input.at (Torturing the Scanner): Add tests for ";|" in a + grammar. + +2003-05-14 Alexandre Duret-Lutz + + %parse-param support for lalr1.cc. + + * data/lalr1.cc (b4_parse_param_decl, b4_parse_param_cons, + b4_cc_constructor_calls, b4_cc_constructor_call, + b4_parse_param_vars, b4_cc_var_decls, b4_cc_var_decl): New m4 + definitions. + (yy::b4_parser_class_name::b4_parser_class_name): Take extra + parse-param arguments. + (yy::b4_parser_class_name): Declare instance variables to + hold parse-param arguments. + * tests/calc.at: s/value/semantic_value/ because value clashes + with a member of yy::b4_parser_class_name. Adjust C++ code + to handle %parse-param. Enable %parse-param test in C++. + +2003-05-12 Paul Eggert + + * doc/bison.texinfo (How Can I Reset @code{yyparse}): Reword the + English a bit. Fix fclose typo. Change "const char" to "char + const", and use ANSI C rather than K&R for "main". Suggest + YY_FLUSH_BUFFER over yyrestart (as that is what Flex recommends) + and suggest yy_switch_to_buffer. + +2003-05-05 Paul Eggert + + * lib/bitset.h (__INT_TO_PTR): Define to a value that presumes + C89. This avoids a diagnostic on compilers that define __STDC__ + to 0, fixing a problem with Tru64 cc reported by Martin Mokrejs in + . + +2003-05-03 Paul Eggert + + * lib/bitset.h (BITSET_FOR_EACH, BITSET_FOR_EACH_REVERSE): + Do not overrun array bounds. + This should fix a bug reported today by Olatunji Oluwabukunmi in + . + +2003-04-29 Akim Demaille + + * src/gram.h, src/gram.c (pure_parser, glr_parser): Move to... + * src/getargs.c, src/getargs.h: here, as bool, not int. + (nondeterministic_parser): New. + * src/parse-gram.y, src/scan-gram.l: Support + %nondeterministic-parser. + * src/output.c (prepare): Use nondeterministic_parser instead + of glr_parser where appropriate. + * src/tables.c (conflict_row, action_row, save_row) + (token_actions, token_actions, pack_vector): Ditto. + +2003-04-29 Akim Demaille + + * doc/bison.texinfo (C++ Parsers, Implementing Loops): New. + +2003-04-29 Akim Demaille + + * tests/calc.at: Also test yacc.c and glr.c (but not lalr1.cc yet) + with %pure-parser and %locations to exercise the patch from Yakov + Markovitch below. + +2003-04-28 Tim Van Holder + + * data/yacc.c: (b4_lex_param): Corrected for the case where + %lex-param is provided and %pure-parser isn't. + +2003-04-27 Paul Eggert + + Avoid gcc -Wundef warnings reported by Gerald Pfeifer in + . + * data/yacc.c (YYSTACK_ALLOC): Don't evaluate YYSTACK_USE_ALLOCA + if it is not defined. + (YYMAXDEPTH): Don't evaluate YYMAXDEPTH if it is not defined. + +2003-04-26 Paul Eggert + + * data/lalr1.cc (yy::Parser::pact_ninf_, yy::Parser::table_ninf_): + Declare to be of type suitable for the ninf value itself, not of + type suitable for the corresponding table, since the latter might + be unsigned but the ninf value might be negative. This fixes a + bug reported by Alexandre Duret-Lutz in + . + + * configure.ac (AC_FUNC_ERROR_AT_LINE): Remove, since gl_ERROR + invokes it. We shouldn't invoke it twice because it will attempt + to put error.o in the archive twice. This fixes a glitch reported + by Martin Mokrejs in + . + +2003-04-21 Paul Eggert + + * m4/error.m4: Update from Bruno Haible's 2003-04-14 patch + to gnulib. + +2003-04-21 Yakov Markovitch + + * data/glr.c (yyexpandGLRStack) [!YYSTACKEXPANDABLE]: + Fix obvious typo that results in uncompilable GLR parsers + when both %pure-parser and %locations are used. (trivial change) + +2003-04-17 Paul Eggert + + * src/scan-gram.l: Add %option nounput, since we no longer use unput. + (unexpected_eof): Renamed from unexpected_end_of_file, for brevity. + Do not insert the expected token via unput, as this runs afoul + of a POSIX-compatibility bug in flex 2.5.31. + All uses changed to BEGIN the parent state, + since we no longer insert the expected token via unput. + * tests/regression.at (Invalid inputs): Remove cascaded diagnostic + that is no longer emitted after the above change. + + * src/conflicts.c (set_conflicts): Resolve all conflicts, not just + the first one. This change is from Paul Hilfinger, and it fixes + regression reported by Werner Lemberg in + . + + (resolve_sr_conflict): Don't invoke state_errs_set + unless one or more tokens have been explicitly made errors. + Otherwise, the above change causes Bison to abort. + + * tests/existing.at (GNU pic Grammar): New test case, taken from + Lemberg's email. + 2003-03-31 Akim Demaille * doc/Makefile.am (AM_MAKEINFOFLAGS): Don't split the info file. @@ -38,7 +3148,7 @@ (<>, <>): Set *loc to the scanner cursor, instead of leaving it undefined. This fixes a bug reported by Tim Van Holder in - . + . * tests/input.at (Torturing the Scanner): Test the scanner on an empty input file, which was Tim Van Holder's test case. @@ -46,7 +3156,7 @@ can be included, include sys/time.h and sys/times.h first, if available. This works around the SunOS 4.1.4 porting bug reported by Bruce Becker in - . + . * m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't AC_CHECK_HEADERS([sys/wait.h]), as this interferes with @@ -160,7 +3270,7 @@ * lib/mbswidth.c: Include before "mbswidth.h", to work around a UnixWare 7.1.1 porting bug reported by John Hughes in - . + . 2003-02-26 Paul Eggert @@ -175,7 +3285,7 @@ * data/glr.c (yy_reduce_print): yylineno -> yylno, to avoid collision with flex use of yylineno. Problem reported by Bruce Lilly in - . + . * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise. * data/yacc.c (yy_reduce_print): Likewise. @@ -245,13 +3355,13 @@ * tests/atlocal.in (LDFLAGS, LIBS): New vars. * tests/testsuite.at (AT_COMPILE): Use them. This fixes the testsuite problem reported by Robert Lentz in - . + . 2003-02-12 Paul Eggert * data/yacc.c (yyerrlab) [YYERROR_VERBOSE]: Avoid subscript error in yycheck. Bug reported by Andrew Suffield in - . + . * data/glr.c (yyreportSyntaxError) [YYERROR_VERBOSE]: Likewise. Check for malloc failure, for consistency with yacc.c. (yytname_size): Remove, for consistency with yacc.c. @@ -381,7 +3491,7 @@ Changes in response to error report by S. Eken: GLR mode does not handle negative $ indices or $ indices in embedded rules correctly. - See . + See . * data/glr.c (b4_rhs_value): Change to use YYFILL macro. (b4_rhs_location): Ditto. @@ -412,8 +3522,8 @@ * data/lalr1.cc: Do not use @output_header_name@ unless b4_defines_flag is set. This fixes two bugs reported by Tim Van Holder in - - and . + + and . 2003-01-21 Paul Eggert @@ -431,7 +3541,7 @@ * src/output.c (symbol_printers_output): Fix typo that led to core dump. Problem reported by Antonio Rus in - . + . 2003-01-13 Akim Demaille , Quoc Peyrot , @@ -449,7 +3559,7 @@ * NEWS: %expect-violations are now just warnings, reverting to Bison 1.30 and 1.75 behavior. This fixes the GCC 3.2 bootstrapping problem reported by Matthias Klose; see - . + . * src/conflicts.c (conflicts_print): Likewise. * tests/conflicts.at (%expect not enough, %expect too much, %expect with reduce conflicts): Likewise. @@ -577,7 +3687,7 @@ Fix a bug where error locations were not being recorded correctly. This problem was originally reported by Paul Hilfinger in - . + . * data/yacc.c (yyparse): New local var yylerrsp, to record the top of the location stack's error locations. @@ -625,7 +3735,7 @@ Remove obsolete references to bison.simple and bison.hairy. Problem mentioned by Aubin Mahe in - . + . * data/glr.c: Comment fix. * doc/bison.1: Remove references. Also, mention "yacc". @@ -760,7 +3870,7 @@ * config/install-sh: Sync with autotools. Fix a bad interaction with flex 2.5.23 reported by Bruce Lilly in - . + . * data/yacc.c (YYLTYPE, struct yyltype): Do not define unless locations are requested. (union yyalloc): Do not depend on YYLTYPE_IS_TRIVIAL unless @@ -1041,7 +4151,7 @@ sequences like "@" that are treated specially by src/scan-skel.l. Instead, just use the file's basename. This fixes the bug reported by Martin Mokrejs in - . + . 2002-12-06 Paul Eggert @@ -1139,7 +4249,7 @@ * configure.ac (AC_REPLACE_FUNCS): Add strtoul. * lib/strtoul.c: New file, from gnulib. This fixes a porting bug reported by Peter Klein in - . + . 2002-11-30 Paul Eggert @@ -1191,7 +4301,7 @@ * data/c.m4 (b4_yysymprint_generate): yyout -> yyoutput, to avoid collision with lex macro described by Bruce Lilly in - . + . * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise. * doc/bison.texinfo (Prologue, Tracing): yyprint -> print_token_value. * src/parse-gram.y (print_token_value): Renamed from yyprint. @@ -1289,7 +4399,7 @@ * data/glr.c (yygetLRActions): Replace `yyindex' with `yytable[yyindex]' to fix typo introduced in my 2002-11-09 patch. This fixes the regression with Sun ONE Studio 7 cc that I reported in - . + . 2002-11-18 Akim Demaille @@ -1407,7 +4517,7 @@ duplicating xfopen's body. Fix bugs reported by Nelson H. F. Beebe in - . + . * tests/headers.at (AT_TEST_CPP_GUARD_H): Don't assume that "$CC -E foo.h" is allowed, as this doesn't work with the Portland @@ -1450,7 +4560,7 @@ 2002-11-13 Paul Eggert Fix some bugs reported by Albert Chin-A-Young in - . + . * tests/input.at (Torturing the Scanner): Don't invoke "cc a.c b.c -o c"; the HP C compiler chatters during compilation. @@ -1479,7 +4589,7 @@ (yyglrReduce): Return yyok, not 0. This should avoid the enumerated-type warnings reported by Nelson H. F. Beebe in - . + . * lib/bbitset.h (BITSET_INLINE): Remove. * lib/bitset.h [! BITSET_INLINE]: Remove. @@ -1489,12 +4599,12 @@ * data/glr.c (inline): Remove #define. It's the user's responsibility to #define it away, just like 'const'. This fixes one of the bugs reported by Nelson H. F. Beebe in - . + . * Makefile.maint (po-check): Scan .l and .y files instead of the .c and the .h files that they generate. This fixes the bug reported by Tim Van Holder in: - + Look for N_ as well as for _. Try to avoid matching #define for N_ and _. * po/POTFILES.in: Remove src/parse-gram.c, src/scan-gram.c, @@ -1655,7 +4765,7 @@ Revamp to fix many (but not all) of the C- and M4-related quoting problems. Among other things, this fixes the Bison bug reported by Jan Hubicka when processing the Bash grammar; see: - + Use new @ escapes consistently. Represent brackets with @{ and @} rather than @<:@ and @:>@, since this works a bit better with dumb @@ -1723,7 +4833,7 @@ 2002-11-09 Paul Eggert Fix the test failure due to GCC warnings described in - . + . * data/glr.c (yyis_pact_ninf, yyis_table_ninf): New macros, which evaluate to 0 if it's impossible for NINF to be in the respective table. @@ -2075,8 +5185,8 @@ * data/glr.c (struct yyltype): Define members even when not doing locations. This is more consistent with yacc.c, and it works around the following bug reports: - http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00106.html - http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00111.html + http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00106.html + http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00111.html * doc/bison.texinfo: Minor spelling and typographical fixes. Use @acronym consistently. Standardize on "Yacc" instead of "YACC", @@ -2508,7 +5618,7 @@ 2002-10-13 Paul Eggert Fix problem reported by Henrik Grubbstroem in - : + : "nonterm: { $$ = 123; } { $$ = $1; };" was wrongly rejected, because the Bison parser reads the second action before reducing the first one. @@ -2525,7 +5635,7 @@ Include when checking for clock_t and struct tms. Use same include order as source. This is for the SunOS 4.1.4 porting bug reported by Peter Klein in - . + . * lib/timevar.c: Update copyright date and clarify comments. (get_time) [IN_GCC]: Keep the GCC version for reference. @@ -2538,13 +5648,13 @@ * src/reader.c (grammar_current_rule_check): Don't worry about the default action if $$ is untyped. Prevents bogus warnings reported by Jim Gifford in - . + . * data/c.m4 (b4_token_enum): Do not define YYTOKENTYPE. * data/glr.c, data/lalr1.cc, data/yacc.c: Output token definitions before the first part of user declarations. Fixes compatibility problem reported by Jim Gifford for kbd in - . + . 2002-10-11 Paul Eggert @@ -2669,7 +5779,7 @@ * lib/bitset.h (bitset_reset): Do not assume that bitset_word is the same width as int. This reapplies a hunk of the 2002-08-12 patch - , + , which was inadvertently undone by the 2002-09-30 patch. * lib/lbitset.c (debug_lbitset): Do not assume that bitset_word is the same width as int. @@ -4374,7 +7484,7 @@ 2002-06-11 Akim Demaille - * src/reader.c (parse_action): Don't store directly into the + * src/reader.c (parse_action): Don't store directly into the rule's action member: return the action as a string. Don't require `rule_length' as an argument: compute it. (grammar_current_rule_symbol_append) @@ -5318,7 +8428,7 @@ * tests/atlocal.at (GCC): New. * tests/synclines.at (AT_TEST_SYNCLINE): New macro. - (Prologue synch line, ,%union synch line, Postprologue synch line) + (Prologue synch line, %union synch line, Postprologue synch line) (Action synch line, Epilogue synch line): New tests. * src/reader.c (parse_union_decl): Define the muscle stype_line. * data/bison.simple, data/bison.c++: Use it. @@ -9394,6 +12504,7 @@ obstacks. (output_token_defines, reader_output_yylsp): Use obstacks. * src/system.h (obstack_fgrow3): New. + * po/POTFILES.in: Adjust. 2000-11-01 Akim Demaille @@ -11130,24 +14241,13 @@ * REFERENCES: entered into RCS ------ - -Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997, -1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. - -This file is part of Bison, the GNU Compiler Compiler. -Bison is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. + ----- -Bison is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, + 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software + Foundation, Inc. -You should have received a copy of the GNU General Public License -along with Bison; see the file COPYING. If not, write to -the Free Software Foundation, Inc., 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. + Copying and distribution of this file, with or without + modification, are permitted provided the copyright notice and this + notice are preserved.