X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/23f2d9dc0f8f52ebfafba88e2666d14e0d168e80..dca81a78f8db18a89fb207df41679c41ec222a90:/ChangeLog?ds=sidebyside diff --git a/ChangeLog b/ChangeLog index e7d623cf..e246ae1c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,1811 @@ +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://mail.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. + +2003-03-31 Akim Demaille + + * src/output.c (prepare_symbols): Avoid trailing spaces in the + output. + +2003-03-31 Akim Demaille + + * doc/bison.texinfo (Strings are Destroyed): s/losses/loses/. + From Paul Hilfinger. + +2003-03-29 Akim Demaille + + * m4/error.m4: Do not put under dynamic conditions some code which + expansion is under static control. + +2003-03-29 Akim Demaille + + * doc/bison.texinfo (How Can I Reset @code{yyparse}): New. + +2003-03-29 Akim Demaille + + * doc/bison.texinfo (Strings are Destroyed): New. + +2003-03-13 Paul Eggert + + * .cvsignore: Add configure.lineno. + * src/.cvsignore: Add yacc. + * tests/.cvsignore: Add testsuite.log. + * doc/fdl.texi: Sync with latest FSF version. + +2003-03-12 Paul Eggert + + * scan-gram.l (YY_USER_INIT): Initialize code_start, too. + (<>, <>): 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. + + * m4/timevar.m4 (BISON_PREREQ_TIMEVAR): When checking whether + 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 + AC_HEADER_SYS_WAIT. + + Merge changes from gnulib. This was prompted because the CVS + snapshot didn't build on Solaris 7 due to strnlen problems. + + These changes need to be merged back into gnulib: + * lib/hash.c: Include unconditionally. + * m4/onceonly.m4 (m4_quote): New macro. + (AC_CHECK_HEADERS_ONCE, AC_CHECK_FUNCS_ONCE, AC_CHECK_DECLS_ONCE): + Quote AC_FOREACH variable-expansions properly. + The 2003-01-03 obstack.h change also needs merging. + {end of changes requiring merging} + + * lib/stdbool.h.in, m4/alloca.m4, m4/dirname.m4, m4/dos.m4, + m4/getopt.m4, m4/hash.m4, m4/malloc.m4, m4/memchr.m4, + m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/quote.m4, + m4/quotearg.m4, m4/realloc.m4, m4/stpcpy.m4, m4/strnlen.m4, + m4/strtol.m4, m4/strtoul.m4, m4/unlocked-io.m4, m4/xalloc.m4: + New files, imported from gnulib. + * m4/Makefile.am (EXTRA_DIST): Add the new m4/*.m4 files mentioned + above. + + * lib/mbswidth.c, m4/error.m4, m4/mbrtowc.m4, m4/mbswidth.m4, + m4/memcmp.m4, m4/prereq.m4, m4/stdbool.m4: Update to current + gnulib sources. + + * configure.ac (gl_DIRNAME, gl_GETOPT, gl_HASH, gl_QUOTE, gl_XALLOC): + Add. + (gl_ERROR): New, replacing jm_PREREQ_ERROR. + (gl_FUNC_ALLOCA): New, replacing AC_FUNC_ALLOCA. + (gl_FUNC_STPCPY): New, replacing AC_REPLACE_FUNCS(stpcpy). + (gl_FUNC_STRNLEN): New, replacing AC_FUNC_STRNLEN. + (gl_MBSWIDTH): New, replacing jm_PREREQ_MBSWIDTH. + (gl_OBSTACK): New, replacing AC_FUNC_OBSTACK. + (gl_QUOTEARG): New, replacing jm_PREREQ_QUOTEARG. + (jm_FUNC_GLIBC_UNLOCKED_IO, gl_FUNC_STPCPY, gl_FUNC_STRTOL): New. + (jm_FUNC_MALLOC): New, replacing AC_FUNC_MALLOC. + (jm_FUNC_REALLOC): New, replacing AC_FUNC_REALLOC. + (jm_PREREQ_ARGMATCH): Remove. + (AC_REPLACE_FUNCS): Remove memchr, memrchr, stpcpy, strtol, strtoul. + * lib/Makefile.am (libbison_a_SOURCES): Add argmatch.c, argmatch.h. + + * src/system.h: Include unconditionally. + + * lib/bbitset.h: Include unconditionally. We have been + assuming at least C89 in the bitset code for some time now. + +2003-03-03 Akim Demaille + + * ro.po: New. + +2003-03-02 Akim Demaille + + * doc/bison.texinfo (Table of Symbols): Reactivate the + documentation for %lex-param, and %parse-param. + +2003-03-02 Akim Demaille + + * data/yacc.c, data/glr.c, data/lal1.cc: Use similar code to + generate verbose error messages. + Use the number of tokens as an upper bound in yytname, as it + cannot be a non terminal. + +2003-03-02 Akim Demaille + + * tests/regression.at (_AT_DATA_DANCER_Y): Fix the expected error + message. + +2003-03-02 Akim Demaille + + * tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New. + Use them to exercise yycheck overrun. + Based on Andrew Suffield's grammar. + +2003-03-02 Akim Demaille + + Create tests/local.at for Bison generic testing macros. + + * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Move to... + * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): + This new file. + * tests/calc.at (AT_CHECK_CALC): Adjust. + * tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR) + (AT_COMPILE, AT_COMPILE_CXX, AT_PARSER_CHECK): Move to... + * tests/local.at: here. + (AT_COMPILE_CXX): Tags the tests using it as c++. + Ignore the test if CXX is not functional. + +2003-03-01 Paul Eggert + + * src/scan-gram.l (code_start): Initialize it to scanner_cursor, + not loc->end, since loc->end might contain garbage and this leads + to undefined behavior on some platforms. + (id_loc, token_start): Use (IF_LINTed) initial values that do not + depend on *loc, so that the reader doesn't give the the false + impression that *loc is initialized. + ("%%"): Do not bother setting code_start, since its value + does not survive the return. + +2003-03-01 Akim Demaille + + * src/scan-gram.l (code_start): Always initialize it when entering + into yylex, as SC_EPILOGUE is activated *before* the corresponding + yylex invocation. An alternative would be making it static, but + then it starts with the second %%'s beginning, instead of its end. + +2003-02-28 Paul Eggert + + * 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 + + * README: Mention compiler bug in Sun Forte Developer 6 update 2. + Remove Sequent/Pyramid discussion (nobody uses them any more). + Merge VMS and MS-DOS discussion; these ports may well be dead + but let's keep mentioning them for now. Put <> around email + addresses. Add copyright notice. + +2003-02-24 Paul Eggert + + * 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. + + * config/depcomp: Sync with Automake 1.7.3. + +2003-02-21 Akim Demaille + + * data/lalr1.cc: Use temporary variables instead of casts to + change integer types. + Suggested by Paul Eggert. + +2003-02-21 Akim Demaille + + * doc/bison.texinfo: Use "location" consistently to refer to @n, + to avoid confusions with lalr1.cc's notion of Position. + Suggested by Paul Eggert. + +2003-02-20 Akim Demaille + + * data/lalr1.cc (position.hh): Make sure "columns" never pushes + before initial_columns. + (location.hh): Use consistent variable names when defining the + operator<<. + Use "last" so that we subtract from Positions, not from unsigned. + +2003-02-20 Akim Demaille + + * data/lalr1.cc (position.hh): New subfile, including the extended + and Doxygen'ed documentation of class Position. + (location.hh): Use it. + Document a` la Doxygen. + With the help of Benoit Perrot. + +2003-02-20 Akim Demaille + + * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Define + AT_YACC_IF. + Redefine AT_YYERROR_SEES_LOC_IF using it. + (_AT_DATA_CALC_Y): Don't declare yyerror when lalr1.cc, as it is + not defined. + Don't use the location in yy::Parser::error_ and + yy::Parser::print_ when not %locations. + Activate more lalr1.cc tests. + +2003-02-19 Akim Demaille + + * data/lalr1.cc: When displaying a line number, be sure to make it + an int. + +2003-02-19 Akim Demaille + + * data/lalr1.cc (b4_stack_depth_init, yy::Parser::initdepth_): + Remove, useless. + (YYABORT, YYACCEPT, YYERROR): New. + * tests/calc.at: Renable the lalr1.cc test. + +2003-02-19 Akim Demaille + + * tests/calc.at (AT_CHECK_CALC): Check different scenarios of + error recovery, mixing with/without pops and discarding of the + lookahead. + Exercise YYERROR. + Disable the lalr1.cc tests as currently it doesn't support YYERROR. + +2003-02-17 Paul Eggert + + * 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. + + The bug still remains in data/lalr1.cc, as I didn't have time + to fix it there. + +2003-02-06 Akim Demaille + + * configure.ac (GXX): Rename as... + (CXX): this, to keep the original Autoconf semantics. + Require 2.57. + * data/lalr1.cc: Fix b4_copyright invocations. + If YYDEBUG is not defined, don't depend upon name_ being defined. + (location.hh): Include string and iostream. + (Position::filename): New member. + (Position::Position ()): New. + (operator<< (Position)): New. + (operator- (Position, int)): New. + (Location::first, Location::last): Rename as... + (Location::begin, Location::end): these, to mock the conventional + iterator names. + (operator<< (Location)): New. + * tests/atlocal.in (CXX): New. + * tests/testsuite.at (AT_COMPILE_CXX): New. + * tests/calc.at (_AT_DATA_CALC_Y): Adjust yyerror to report the + locations in a more synthetic way. + (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF is positive if + lalr1.cc is used. + Adjust the C locations to match those from Emacs: first column is + column 0. + Change all the expected results. + Conform to the GCS: simplify the locations when applicable. + (LOC, VAL, YYLLOC_FORMAL, YYLLOC_ARG, USE_YYLLOC, LEX_FORMALS) + (LEX_ARGS, USE_LEX_ARGS, LEX_PRE_FORMALS, LEX_PRE_ARGS): Replace + these CPP macros with the m4 macros new defined by... + (AT_CHECK_PUSHDEFS): this, i.e.: + (AT_LALR1_CC_IF, AT_PURE_LEX_IF, AT_LOC, AT_VAL, AT_LEX_FORMALS) + (AT_LEX_ARGS, AT_USE_LEX_ARGS, AT_LEX_PRE_FORMALS, AT_LEX_PRE_ARGS) + New macros. + (AT_CHECK_POPDEFS): Undefine them. + (AT_CHECK_CALC_LALR1_CC): New. + Use it for the first lalr1.cc test. + +2003-02-04 Akim Demaille + + * data/lalr1.cc (YYLLOC_DEFAULT): Fix its definition: be based on + Location as is defined. + +2003-02-04 Akim Demaille + + * data/lalr1.cc: If YYDEBUG is not defined, don't depend upon + name_ being defined. + +2003-02-03 Paul Eggert + + * src/gram.h (start_symbol): Remove unused decl. + + Use more-consistent naming conventions for local vars. + + * src/derives.c (derives_compute): Change type of local var from + int to rule_number. + * src/gram.c (grammar_rules_partial_print): Likewise. + * src/print.c (print_core): Likewise. + * src/reduce.c (reduce_grammar_tables): Likewise. + + * src/gram.c (grammar_dump): Change name of item_number * + local var from r to rp. + * src/nullable.c (nullable_compute): Likewise. + + * src/gram.h (ISTOKEN, ISVAR): Use i, not s, for int var. + + * src/gram.h (symbol_number_as_item_number): Use sym, not s, + for symbol or symbol_number var. + * src/reader.c (grammar_start_symbol_set): Likewise. + * src/reader.h (grammar_start_symbol_set, grammar_symbol_append): + Likewise. + * src/state.c (transitions_to): Likewise. + * src/state.h: Likewise. + * src/tables.c (symbol_number_to_vector_number): Likewise. + + * src/muscle_tab.h (MUSCLE_OBSTACK_SGROW): Use p, not s, for + char * var. + + * src/parse-gram.y (lloc_default): Use loc, not r, for YYLTYPE + var. + + * src/scan-gram.l (no_cr_read): Use bytes_read, not s, for size + var. + + * src/system.h (xstrndup, strchr, strspn, strnlen, memchr, memrchr): + Use str, not s, for char * var. Use ch, not c, for character var. + Use size for size var. + + * src/uniqstr.c (uniqstr_new, uniqstr_assert): Use str, not s, for + char * var. + (uniqstr_print, uniqst_print_processor): Use ustr, not s, for + uniqstr var. + * src/uniqstr.h: Likewise. + + * src/vcg.c (get_color_str, get_textmode_str, get_shape_str, + get_layoutalgorithm_str, get_decision_str, get_orientation_str, + get_node_alignment_str, get_arrow_mode_str, get_crossing_type_str, + get_view_str, get_linestyle_str, get_arrowstyle_str): Rename + param to have same name as that of enum, so that we don't use + "s" to stand for a non-state. + +2003-02-02 Akim Demaille + + * src/scan-skel.l: Scan more than one inert character per yylex + invocation. + +2003-02-01 Paul Eggert + + Version 1.875a. + + * po/LINGUAS: Add ms. + +2003-01-30 Akim Demaille + + * doc/Makefile.am (CLEANFILES): Add bison.fns for distcheck. + +2003-01-29 Paul Hilfinger + + * tests/cxx-type.at: Correct apparent typo in Bison input: $$ instead + of $1. + + Changes in response to error report by S. Eken: GLR mode does not + handle negative $ indices or $ indices in embedded rules correctly. + See . + + * data/glr.c (b4_rhs_value): Change to use YYFILL macro. + (b4_rhs_location): Ditto. + (yyfill): New function to copy from stack tree into array + incrementally. + (yyuserAction): Modify to allow incremental move of semantic values + to rhs array when in GLR mode. + Define YYFILL to use in user-defined actions to fill semantic array + as needed. + Remove dummy use of yystack, as there is now a guaranteed use. + (yydoAction): Modify to allow incremental move of semantic values + to rhs array when in GLR mode. + (yyresolveAction): Ditto. + (yyglrShiftDefer): Update comment. + (yyresolveStates): Use X == NULL for pointers, not !X. + (yyglrReduce): Ditto. + (yydoAction): Ditto + + * tests/glr-regr1.at: Rename to ... + * tests/glr-regression.at: Add new regression test for the problems + described above (adapted from S. Eken). + Update copyright notice. + * tests/testsuite.at: Rename glr-regr1.at to glr-regression.at. + * tests/Makefile.am: Ditto. + +2003-01-28 Paul Eggert + + * 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 . + +2003-01-21 Paul Eggert + + * data/yacc.c (YYERROR): Move code from yyerrlab1 to here, so that + we don't need to worry about yyerrlab1 being reported as an + "unused label" by non-GCC C compilers. The downside is that if + locations are used then a couple of statements are duplicated each + time YYERROR is invoked, but the upside is that the warnings + should vanish. + (yyerrlab1): Move code to YERROR. + (yyerrlab2): Remove. Change uses back to yyerrlab1. + This reverts some of the 2002-12-27 change. + +2003-01-17 Paul Eggert + + * 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 , + Robert Anisko + + * data/lalr1.cc (parse::yyerrlab1): When popping the stack, stop + when the stacks contain one element, as the loop would otherwise + free the last state, and then use the top state (the one we just + popped). This means that the initial elements will not be freed + explicitly, as is the case in yacc.c; it is not a problem, as + these elements have fake values. + +2003-01-11 Paul Eggert + + * 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. + * doc/bison.texinfo (Expect Decl): Document this. Also mention + that the warning is enabled if the number of conflicts changes + (not necessarily increases). + + * src/getargs.c (version): Update copyright year. + +2003-01-09 Akim Demaille + + * src/Makefile.am, lib/Makefile.am: Use $(VAR) instead of @VAR@. + +2003-01-08 Paul Eggert + + * Makefile.maint (WGETFLAGS): + New macro, containing "-C off" to disable proxy caches. + All uses of $(WGET) changed to $(WGET) $(WGETFLAGS). + (rel-check): Use $(WGET) instead of wget. + +2003-01-06 Paul Eggert + + * doc/bison.texinfo (Generalized LR Parsing): Add a reference to + the GLR paper of Scott, Johnstone and Hussain. + +2003-01-04 Paul Eggert + + * configure.ac (AC_ARG_ENABLE): Add --disable-yacc. + (YACC_SCRIPT, YACC_LIBRARY): New vars to AC_SUBST. + * lib/Makefile.am (lib_LIBRARIES): liby.a -> @YACC_LIBRARY@. + (EXTRA_LIBRARIES): New var, for liby.a. + * src/Makefile.am (bin_SCRIPTS): yacc -> @YACC_SCRIPT@. + (EXTRA_SCRIPTS): New var, for yacc. + + * data/yacc.c (yyerrlab1): Omit attribute if __cplusplus is defined, + since GNU C++ (as of 3.2.1) does not allow attributes on labels. + Problem reported by Nelson H. F. Beebe. + +2003-01-03 Paul Eggert + + * lib/obstack.h (__INT_TO_PTR) [__STDC__]: Cast result to + (void *) to avoid diagnostic with native c89 on SGI IRIX 6.5 + when compiling Bison 1.875's `bitset bset = obstack_alloc + (bobstack, bytes);'. Problem reported by Nelson H. F. Beebe. + + * src/scan-skel.l (QPUTS): Omit redundant `;' from macro definition. + ([^@\n]): Renamed from [^@\n]+ so that the token buffer does not + grow to a huge size with typical invocation. + + * lib/hash.c (_Bool, bool, false, true, __bool_true_false_are_defined): + Use the pattern recommended by Autoconf 2.57, except also protect + against double-definition. + * src/system.h: Likewise. + Portability issues reported by Nelson H. F. Beebe. + + * data/glr.c (yybool): Renamed from bool, to avoid collisions in C. + All uses changed. Provide a definition in both C and C++. + (yytrue, yyfalse): Define even if defined (__cplusplus). + + * lib/bitset_stats.c (bitset_stats_list): Remove unused var. + Reported by Nelson H. F. Beebe. + + * src/scan-skel.l ("@oline@"): Output lineno+1, not lineno. + +2003-01-02 Paul Eggert + + * data/yacc.c (yyerrlab1): Append `;' after attribute, to + pacify the buggy "smart preprocessor" in MacOS 10.2.3. + Bug reported by Nelson H. F. Beebe. + +2003-01-01 Paul Eggert + + * Version 1.875. + +2002-12-30 Paul Eggert + + * src/scan-gram.l (","): + Moved here from... + (","): Here. This causes stray "," to be treated + more uniformly. + + * src/scan-gram.l ("}"): Output ";" before the + last brace in braced code when not in Yacc mode, for compatibility + with Bison 1.35. This resurrects the 2001-12-15 patch to + src/reader.c. + + * src/reader.h (YYDECL): Use YYSTYPE, not its deprecated alias + yystype. This follows up the 2002-12-24 YYSTYPE bug fix. + +2002-12-28 Paul Eggert + + * src/symtab.c (symbol_make_alias): Set type of SYMVAL to be + that of SYM's type. This fixes Debian bug 168069, reported by + Thomas Olsson. + +2002-12-28 Paul Eggert + + Version 1.75f. + + Switch back to the Yacc style of conflict reports, undoing some + of the 2002-07-30 change. + * doc/bison.texinfo (Understanding): Use Yacc style for + conflict reports. Also, use new way of locating rules. + * src/conflicts.c (conflict_report): + Renamed from conflict_report_yacc, removing the old + 'conflict_report'. Translate the entire conflict report at once, + so that we don't assume that "," has the same interpretation in + all languages. + (conflicts_output): Use Yacc-style conflict report for each state, + instead of our more-complicated style. + (conflicts_print): Use Yacc-style conflict report, except print + the input file name when not emulating Yacc. + * tests/conflicts.at (Unresolved SR Conflicts, Defaulted + Conflicted Reduction, %expect not enough, %expect too much, + %expect with reduce conflicts): Switch to Yacc-style conflict reports. + * tests/existing.at (GNU Cim Grammar): Likewise. + * tests/glr-regr1.at (Badly Collapsed GLR States): Likewise. + + * src/complain.c (warn_at, warn, complain_at, complain, fatal_at, + fatal): Don't invoke fflush; it's not needed and it might even be + harmful for stdout, as stdout might not be open. + * src/reduce.c (reduce_print): Likewise. + +2002-12-27 Paul Eggert + + 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. + (yyerrlab): Set it. When discarding a token, push its location + onto yylerrsp so that we don't lose track of the error's end. + (yyerrlab1): Now is only the target of YYERROR, so that we can + properly record the location of the action that failed. For GCC + 2.93 and later, insert an __attribute__ ((__unused__)) to avoid + GCC warning about yyerrlab1 being unused if YYERROR is unused. + (yyerrlab2): New label, which yyerrlab now falls through to. + Compute the error's location by applying YYLLOC_DEFAULT to + the locations of all the symbols that went into the error. + * doc/bison.texinfo (Location Default Action): Mention that + YYLLOC_DEFAULT is also invoked for syntax errors. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): + Error locations include the locations of all the tokens that were + discarded, not just the last token. + +2002-12-26 Paul Eggert + + * src/files.c: Include quote.h. + (compute_output_file_names): Warn if we detect conflicting + outputs to the same file. This should catch the misunderstanding + exemplified by Debian Bug 165349, reported by Bruce Stephens.. + + * src/conflicts.c (conflicts_print): If the user specifies + "%expect N", report an error if there are any reduce/reduce + conflicts. This is what the manual says should happen. + This fixes Debian bug 130890, reported by Anthony DeRobertis. + * tests/conflicts.at (%expect with reduce conflicts): New test. + + Don't use m4_include on relative file names, as it doesn't work as + desired if there happens to be a file with that name under ".". + + * m4sugar/version.m4: Remove; it was included but it wasn't used. + * data/Makefile.am (dist_m4sugar_DATA): Remove m4sugar/version.m4. + * data/m4sugar/m4sugar.m4: Don't include m4sugar/version.m4. + * data/glr.c, data/lalr1.cc, data/yacc.c: Don't include c.m4. + * src/output.c (output_skeleton): Use full path names when + specifying a file to include; don't rely on include path, as + it's unreliable when the working file contains a file with + that name. + +2002-12-25 Paul Eggert + + 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". + + * src/getargs.c (getargs) [MSDOS]: Don't assume optarg != NULL + with -g option. + + * src/parse-gram.y (declaration): Use enum "report_states" rather + than its numeric value 1. + + * src/scan-skel.l ("@output ".*\n): Close any old yyout before + opening a new one. This fixes Debian bug 165349, reported by + Bruce Stephens. + 2002-12-24 Paul Eggert Version 1.75e. @@ -59,7 +1867,7 @@ (token_type): New local var, to keep track of which token type to return when scanning braced code. ("%destructor", "%lex-param", - "%parse-param", "%printer, + "%parse-param", "%printer", "%union"): Set token type and BEGIN SC_PRE_CODE instead of returning a token type immediately. ("{"): Set token type. @@ -84,10 +1892,9 @@ Undo most of the 2002-11-12 yychar -> yytoken patch, as it broke GCC 3.2.1 (which depends on yychar == YYEMPTY when there is no lookahead symbol, and which sets yychar in parser actions) and it - disagreed with the Bison documentation. This should fix the bug - reported by Andrew Walrond in - . - + disagreed with the Bison documentation. Bug + reported by Andrew Walrond. + * data/yacc.c (YYTRANSLATE): Don't check for negative argument, as the caller now does that. (yyclearin, YYBACKUP, yyparse): Use yychar, not yytoken. @@ -107,7 +1914,7 @@ as an alias for bison y. * po/LINGUAS: Add da. - + * src/getargs.c (__GNU_LIBRARY__) [lint]: Define to work around problem with latest . (HACK_FOR___GNU_LIBRARY___PROTOTYPE): New macro. @@ -120,7 +1927,7 @@ * 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 @@ -401,7 +2208,7 @@ 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 @@ -499,7 +2306,7 @@ * 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 @@ -551,7 +2358,7 @@ * 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. @@ -649,7 +2456,7 @@ * 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 @@ -767,7 +2574,7 @@ 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 @@ -778,9 +2585,7 @@ backslash-newline tests with "#if 0", to make it less likely that we'll run into compiler bugs. Bring back solitary \ inside comment, but add a closing comment to work around HP C bug. Don't - test backslash-newline in C character constant. This should fix - the input.at bug reported by Nelson H. F. Beebe in - . + test backslash-newline in C character constant. 2002-11-14 Akim Demaille @@ -812,7 +2617,7 @@ 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. @@ -840,8 +2645,8 @@ * data/glr.c (yydoAction): Return YYRESULTTAG, not int. (yyglrReduce): Return yyok, not 0. This should avoid the enumerated-type warnings reported - by Nelson H.F. Beebe in - . + by Nelson H. F. Beebe in + . * lib/bbitset.h (BITSET_INLINE): Remove. * lib/bitset.h [! BITSET_INLINE]: Remove. @@ -850,13 +2655,13 @@ * 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 - . + 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, @@ -1017,7 +2822,7 @@ 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 @@ -1085,7 +2890,7 @@ 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. @@ -1437,10 +3242,8 @@ * 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/pipermail/bug-bison/2002-October/001764.html - http://mail.gnu.org/pipermail/bug-bison/2002-October/001769.html - and I hope it also fixes this bug report: - http://mail.gnu.org/pipermail/bug-bison/2002-October/001748.html + http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00106.html + http://mail.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", @@ -1872,7 +3675,7 @@ 2002-10-13 Paul Eggert Fix problem reported by Henrik Grubbstroem in - : + : "nonterm: { $$ = 123; } { $$ = $1; };" was wrongly rejected, because the Bison parser reads the second action before reducing the first one. @@ -1889,7 +3692,7 @@ Include when checking for clock_t and struct tms. Use same include order as source. This is for the SunOS 4.1.4 porting bug reported by Peter Klein in - . + . * lib/timevar.c: Update copyright date and clarify comments. (get_time) [IN_GCC]: Keep the GCC version for reference. @@ -1902,13 +3705,13 @@ * src/reader.c (grammar_current_rule_check): Don't worry about the default action if $$ 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 @@ -2033,7 +3836,7 @@ * 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. @@ -3738,7 +5541,7 @@ 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) @@ -6295,7 +8098,7 @@ * tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and its argument. - Reported by Peter Hámorský. + Reported by Peter Hamorsky. 2001-12-05 Akim Demaille @@ -7135,7 +8938,7 @@ 2001-11-12 Akim Demaille - %expext was not functioning at all. + %expect was not functioning at all. * src/conflicts.c (expected_conflicts): Set to -1. (conflict_report): Use ngettext. @@ -8758,6 +10561,7 @@ obstacks. (output_token_defines, reader_output_yylsp): Use obstacks. * src/system.h (obstack_fgrow3): New. + * po/POTFILES.in: Adjust. 2000-11-01 Akim Demaille @@ -10493,10 +12297,11 @@ 1987-12-16 Richard Stallman * REFERENCES: entered into RCS + ----- Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997, -1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. +1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler.