X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/eb714592014d00c816018a32dd66ff2ef471ae4a..72f889cca34803dfdd3327862bc26267bc679863:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 07800e0d..4a7a53ea 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,991 @@ +2002-11-12 Akim Demaille + + * doc/bison.texinfo (Destructor Decl): New. + +2002-11-12 Akim Demaille + + * src/tables.c (tables_generate): Use free for pointers that + cannot be NULL, not XFREE. + (pack_vector): Use assert, not fatal, for bound violations. + * src/state.c (state_new): Likewise. + * src/reader.c (reader): Likewise. + * src/lalr.c (set_goto_map): Likewise. + * src/location.h (LOCATION_PRINT): If first_line is 0, just issue + the file name. + +2002-11-12 Akim Demaille + + * src/scan-gram.l, src/reader.h (scanner_last_string_free): + Restore. + * src/scan-gram.l (last_string): Is global to the file, not to + yylex. + * src/parse-gram.y (input): Don't append the epilogue here, + (epilogue.opt): do it here, and free the scanner's obstack. + * src/reader.c (epilogue_set): Rename as... + (epilogue_augment): this. + * data/c.m4 (b4_epilogue): Defaults to empty. + +2002-11-12 Akim Demaille + + * src/getargs.c (long_options): Remove duplicates. + * src/vmsgetargs.c, src/build.com, src/bison.cld, src/vmshlp.mar: + Remove. + * doc/bison.rnh: Remove. + * doc/bison.texinfo (VMS Invocation): Remove. + +2002-11-12 Akim Demaille + + * src/struniq.h, src/struniq.c (struniq_t): Is const. + (STRUNIQ_EQ, struniq_assert, struniq_assert_p): New. + + Use struniq for symbols. + + * src/symtab.h (symbol_t): The tag member is a struniq. + (symbol_type_set): Adjust. + * src/symtab.c (symbol_new): Takes a struniq. + (symbol_free): Don't free the tag member. + (hash_compare_symbol_t, hash_symbol_t): Rename as... + (hash_compare_symbol, hash_symbol): these. + Use the fact that tags as struniqs. + (symbol_get): Use struniq_new. + * src/symlist.h, src/symlist.c (symbol_list_n_type_name_get): + Returns a strniq. + * src/reader.h (merger_list, grammar_currentmerge_set): The name + and type members are struniqs. + * src/reader.c (get_merge_function) + (grammar_current_rule_merge_set): Adjust. + (TYPE, current_type): Are struniq. + + Use struniq for file names. + + * src/files.h, src/files.c (infile): Split into... + (grammar_file, current_file): these. + * src/scan-gram.c (YY_USER_INIT, handle_syncline): Adjust. + * src/reduce.c (reduce_print): Likewise. + * src/getargs.c (getargs): Likewise. + * src/complain.h, src/complain.c: Likewise. + * src/main.c (main): Call struniqs_new early enough to use it for + file names. + Don't free the input file name. + +2002-11-12 Akim Demaille + + * src/symtab.c (symbol_free): Remove dead deactivated code: + type_name are properly removed. + Don't use XFREE to free items that cannot be NULL. + * src/struniq.h, src/struniq.c: New. + * src/main.c (main): Initialize/free struniqs. + * src/parse-gram.y (%union): Add astruniq member. + (yyprint): Adjust. + * src/scan-gram.l (<{tag}>): Return a struniq. + Free the obstack bit that used to store it. + * src/symtab.h (symbol_t): The 'type_name' member is a struniq. + +2002-11-11 Paul Eggert + + 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 + editors like vi. Represent @ with @@, since @ is now consistently + an escape. Use @oline@ and @ofile@ rather than __oline__ and + __ofile__, to avoid unexpected expansions. Similarly, use @output + rather than #output. + + * data/c.m4 (b4_copyright): Omit file name from comment, since + the file name could contain "*/". + (b4_synclines_flag): Don't quote the 2nd argument; it should already + be quoted. All uses changed. + + * data/glr.c: Use new @ escapes consistently. + (b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name, + b4_output_header_suffix, b4_output_header_name, b4_header_guard): + Remove, since they couldn't handle arbitrary characters in file + names. + * data/lalr1.cc: Likewise. + * data/yacc.c: Likewise. + + * src/files.c (output_infix): Remove; all uses removed. + * src/files.h: Likewise. + + * data/glr.c: Remove use of "#ifdef b4_header_guard", since it + mishandled funny characters in file names, and anyway it isn't + needed any more. + * data/yacc.c: Likewise. + * data/lalr1.cc: Use YYSLP_NEEDED instead of b4_header_guard. + + * data/glr.c (YYSTYPE_IS_TRIVIAL): Define when the .h file would. + * data/yacc.c: Likewise. + + * src/muscle_tab.c: Include quotearg.h, since we need to quote C + strings now. + (muscle_init): Quote filename as a C string. + * src/muscle_tab.h (MUSCLE_GROW_STRING_PAIR): Remove; unused. + (MUSCLE_OBSTACK_SGROW, MUSCLE_INSERT_C_STRING): New macros. + * src/output.c (escaped_file_name_output): New function. + (prepare_symbols): Quote tokens for M4. + (prepare): Don't insert output_infix, output_prefix, + output_parser_name, output_header_name; this is now down by scan-skel. + Insert skeleton as a C string. + + * src/output.c (user_actions_output, symbol_destructors_output, + symbol_printers_output): Quote filenames for C and M4. + * src/reader.c (prologue_augment, epilogue_set): Likewise. + + * src/scan-gram.l (): Don't worry about any backslash + escapes other than \\ and \'; this simplifies the code. + (): Likewise, for \\ and \". + (): Escape $ and @, too. + Use new escapes @{ and @} for [ and ]. + + * src/scan-skel.l (yylineno, yyoutname): Remove static vars, replacing + them with auto vars. + Switch to new escape scheme, where @ is the escape character uniformly. + Abort if a stray escape character is found. Avoid unbounded input + buffer when parsing non-escaped text. + + * tests/input.at (Torturing the Scanner): Add tests that @oline@, + __oline__, #output, $@, and @{ do not have unintended meanings. + +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. + (yygetLRActions, yyrecoverParseError): Use them. + + * src/scan-gram.l (unexpected_end_of_file): Fix bug: columns were + counted in the token inserted at end of file. Now takes + location_t *, not location_t, so that the location can be + adjusted. All uses changed. + + * tests/regression.at (Invalid inputs): Adjust wording in + diagnostic to match the new behavior. + + * tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR, + AT_DATA_HORIZONTAL_GRAMMAR, AT_DATA_LOOKAHEADS_GRAMMAR, + AT_DATA_STACK_TORTURE): Replace `assert (x);' with `if (! (x)) + abort ();'. This reduces the runtime of the "Many lookaheads" + test from 27.6 to 2.7 minutes on a 440 MHz Ultrasparc III running + GCC 3.2. + +2002-11-07 Paul Eggert + + * src/parse-gram.y (CHARACTER): Remove unused token. + All uses removed. + + * src/scan-gram.l: Remove stack option. We no longer use the + stack, since the stack was never deeper than 1; instead, use the + new auto var c_context to record the stacked value. + + Remove nounput option. At an unexpected end of file, we now unput + the minimal input necessary to end cleanly; this simplifies the + code. + + Avoid unbounded token sizes where this is easy. + + (unexpected_end_of_file): New function. + Use it to systematize the error message on unexpected EOF. + (last-string): Now auto, not static. + (YY_OBS_FREE): Remove unnecessary do while (0) wrapper. + (scanner_last_string_free): Remove; not used. + (percent_percent_count): Move decl to just before use. + (SC_ESCAPED_CHARACTER): Return ID at unexpected end of file, + not the (never otherwised-used) CHARACTER. + +2002-11-07 Akim Demaille + + Let yyerror always receive the msg as last argument, so that + yyerror can be variadic. + + * data/yacc.c (b4_yyerror_args): New. + Use it when calling yyerror. + * data/glr.c (b4_yyerror_args, b4_lyyerror_args): New. + Use it when calling yyerror. + * doc/bison.texinfo (Error Reporting): Adjust. + * tests/calc.at (_AT_DATA_CALC_Y): Adjust. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Adjust. + +2002-11-06 Akim Demaille + + #line should have quoted strings. + Ideally, this should be done by m4_quotearg. + + * src/scan-skel.l: Include quotearg.h. + Quote __ofile__. + * src/output.c (symbol_printers_output) + (symbol_destructors_output): Quote the file name. + +2002-11-06 Akim Demaille + + * tests/regression.at (Invalid inputs): Adjust to the recent + messages. + +2002-11-06 Akim Demaille + + Restore --no-lines. + Reported by Jim Kent. + + * data/c.m4 (b4_syncline): New. + * data/glr.c, data/yacc.c, data/lalr1.cc: Use it. + * src/reader.c (prologue_augment, epilogue_set): Use b4_syncline. + * src/output.c (user_actions_output): Likewise. + (prepare): Define 'b4_synclines_flag'. + * src/muscle_tab.c (muscle_init): Don't define b4_linef. + +2002-11-06 Akim Demaille + + * src/main.c (main): Free `infile'. + * src/scan-gram.l (handle_syncline): New. + Recognize `#line'. + * src/output.c (user_actions_output, symbol_destructors_output) + (symbol_printers_output): Use the location's file name, not + infile. + * src/reader.c (prologue_augment, epilogue_set): Likewise. + +2002-11-05 Paul Hilfinger + + * src/tables.c (matching_state): Don't allow states to match if + either has GLR conflict entries. + +2002-11-05 Paul Eggert + + * src/scan-gram.l: Use more accurate diagnostics, e.g. + "integer out of range" rather than "invalid value". + * tests/input.at (Invalid $n, Invalid @n): Change expected wording + accordingly. + + Scan <% and %> digraphs in C code as POSIX 1003.1-2001 requires. + Also, remove one static variable in the scanner. + + * src/scan-gram.l (braces_level): Now auto, not static. + Initialize to zero if the compiler is being picky. + (INITIAL): Clear braces_level instead of incrementing it. + (SC_BRACED_CODE): Treat <% and %> as { and } when inside C code, + as POSIX 1003.1-2001 requires. + * src/system.h (IF_LINT): New macro, taken from coreutils. + * configure.ac: Define "lint" if --enable-gcc-warnings. + +2002-11-05 Akim Demaille + + * src/scan-gram.l: When it starts with `%', complain about the + whole directive, not just that `invalid character: %'. + +2002-11-04 Akim Demaille + + * Makefile.maint: Update from Autoconf. + (update, cvs-update, po-update, do-po-update): New. + +2002-11-04 Akim Demaille + + * tests/glr-regr1.at (Badly Collapsed GLR States): Prototype yylex + and yyerror. + Have yyerror `use' its arguments. + * tests/calc.at (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF + returns true when location & yacc & pure & parse-param. + (_AT_DATA_CALC_Y): Let yyerror ``use'' its arguments. + +2002-11-04 Akim Demaille + + * src/location.h (LOCATION_PRINT): Use quotearg slot 3 to avoid + clashes. + * src/scan-gram.l: Use [\'] instead of ['] to pacify + font-lock-mode. + Use complain_at. + Use quote, not quote_n since LOCATION_PRINT no longer uses the + slot 0. + +2002-11-03 Paul Eggert + + * src/reader.c (get_merge_function, grammar_current_rule_check): + Use consistent diagnostics for reporting type name clashes. + Quote the types with <>, for consistency with Yacc. + * tests/input.at (Type Clashes): Adjust to diagnostic changes. + +2002-11-03 Akim Demaille + + * data/c.m4 (b4_identification, b4_user_args, b4_parse_param): + New. + * data/yacc.m4 (b4_pure_args, b4_Pure_args): New. + (b4_parse_param): Remove. + Use b4_identification. + Propagate b4_pure_args where needed to pass them to yyerror. + * data/glr.m4 (b4_parse_param): Remove. + (b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args) + (b4_lpure_formals): New. + Use b4_identification. + (YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by + b4_user_formals and b4_user_args. + (yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer) + (yyreportAmbiguity): When using a pure parser, also need + the location, and the parse-params. + Adjust callers. + (yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError): + When using a pure parser, also need the parse-params. + Adjust callers. + * tests/calc.at: Test pure (%pure-parser) and absolutely pure + (%pure-parser + %parse-param) LALR and GLR parsers. + (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF, + AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF, + AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF. + (_AT_DATA_CALC_Y): Equip for purity of yyerror. + (_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity. + * doc/bison.texinfo: Untabify the whole file. + (Parser Function): Document %parse-param, deprecate YYPARSE_PARAM. + (Pure Calling): Document %lex-param, deprecate YYLEX_PARAM. + (Error Reporting): Adjust to these new directives. + Document %error-verbose, deprecate YYERROR_VERBOSE. + +2002-11-03 Akim Demaille + + * tests/calc.at: Change all the AT_CHECK_CALC_LALR and + AT_CHECK_CALC_GLR invocations to use % directives, instead of + command line options. + * tests/cxx-type.at: Formatting changes. + +2002-11-03 Paul Eggert + + * src/scan-gram.l: Revamp to fix POSIX incompatibilities, + to count columns correctly, and to check for invalid inputs. + + Use mbsnwidth to count columns correctly. Account for tabs, too. + Include mbswidth.h. + (YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS. + (extend_location): New function. + (YY_LINES): Remove. + + Handle CRLF in C code rather than in Lex code. + (YY_INPUT): New macro. + (no_cr_read): New function. + + Scan UCNs, even though we don't fully handle them yet. + (convert_ucn_to_byte): New function. + + Handle backslash-newline correctly in C code. + (SC_LINE_COMMENT, SC_YACC_COMMENT): New states. + (eols, blanks): Remove. YY_USER_ACTION now counts newlines etc.; + all uses changed. + (tag, splice): New EREs. Do not allow NUL or newline in tags. + Use {splice} wherever C allows backslash-newline. + YY_STEP after space, newline, vertical-tab. + ("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT). + + (letter, id): Don't assume ASCII; e.g., spell out a-z. + + ({int}, handle_action_dollar, handle_action_at): Check for integer + overflow. + + (YY_STEP): Omit trailing semicolon, so that it's more like C. + + (): Allow \0 and \00 + as well as \000. Check for UCHAR_MAX, not 255. + Allow \x with an arbitrary positive number of digits, as in C. + Check for overflow here. + Allow \? and UCNs, for compatibility with C. + + (handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision + with quote slot used by complain_at. + + * tests/input.at: Add tests for backslash-newline, m4 quotes + in symbols, long literals, and funny escapes in strings. + + * configure.ac (jm_PREREQ_MBSWIDTH): Add. + * lib/Makefile.am (libbison_a_SOURCES): Add mbswidth.h, mbswidth.c. + * lib/mbswidth.h, lib/mbswidth.c: New files, from GNU gettext. + * m4/Makefile.am (EXTRA_DIST): Add mbswidth.m4. + * m4/mbswidth.m4: New file, from GNU coreutils. + + * doc/bison.texinfo (Grammar Outline): Document // comments. + (Symbols): Document that trigraphs have no special meaning in Bison, + nor is backslash-newline allowed. + (Actions): Document that trigraphs have no special meaning. + + * src/location.h (LOCATION_COLUMNS, LOCATION_LINES): Remove; + no longer used. + +2002-11-02 Paul Eggert + + * src/reader.c: Don't include quote.h; not needed. + (get_merge_function): Reword warning to be consistent with + type clash diagnostic in grammar_current_rule_check. + + * lib/quotearg.c (quotearg_buffer_restyled): Fix off-by-two + bug in trigraph handling. + + * src/output.c (prepare_symbols): When printing token names, + escape "[" as "@<:@" and likewise for "]". + + * src/system.h (errno): Remove declaration, as we are now + assuming C89 or better, and C89 guarantees errno. + +2002-10-30 Paul Eggert + + * lib/bitset_stats.c (bitset_stats_read, bitset_stats_write): + Check for close failures. + * src/files.h (xfclose): Return void, not int, since it always + returned zero. + * src/files.c (xfclose): Likewise. Report I/O error if ferror + indicates one. + * src/output.c (output_skeleton): Use xfclose rather than fclose + and ferror. xfclose now checks ferror. + + * data/glr.c (YYLEFTMOST_STATE): Remove. + (yyreportTree): Use a stack-based leftmost state. This avoids + our continuing battles with bogus warnings about initializers. + +2002-10-30 Akim Demaille + + * src/system.h: Don't use #ifdef/#ifndef on HAVE_ values, only + #if. + +2002-10-29 Paul Hilfinger + + * tests/glr-regr1.at: New test for reported regressions. + * tests/testsuite.at: Add glr-regr1.at test. + * tests/Makefile.am: Add glr-regr1.at test. + +2002-10-24 Paul Eggert + + Version 1.75a. + + * tests/calc.at (_AT_DATA_CALC_Y): Remove unused strcat declaration. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Include stdlib.h, since + we use malloc. Don't assume 'A' through 'Z' are contiguous. + Don't assume strdup exists; POSIX says its an XSI extension. + Check for buffer overflow on input. + +2002-10-24 Akim Demaille + + * src/output.c (output_skeleton): Don't disable M4sugar comments + too soon: it results in comments being expanded. + * data/yacc.c, data/glr.c, data/lalr1.cc: Do it right before the + first output. + +2002-10-24 Akim Demaille + + * data/yacc.c (m4_int_type): New. + * data/c.m4 (m4_int_type): Don't use yysigned_char, but `signed + char' as only yacc.c wants K&R portability. + * data/glr.c (yysigned_char): Remove. + * data/lalr1.cc: Rename the trailing b4_name as b4_parser_class_name. + Reported by Quoc Peyrot. + +2002-10-23 Paul Eggert + + * src/main.c (main): With --trace=time, report times even if a + non-fatal error occurs. Formerly, the times were reported in some + such cases but not in others. + * src/reader.c (reader): Just return if a complaint has been issued, + instead of exiting, so that 'main' can report times. + +2002-10-22 Akim Demaille + + * src/system.h: Include sys/types. + Reported by Bert Deknuydt. + +2002-10-23 Paul Eggert + + * configure.ac (AC_PROG_LEX): Use instead of AM_PROG_LEX. + Suggested by Art Haas. + +2002-10-22 Paul Eggert + + * src/complain.c (exit) [! (STDC_HEADERS || _LIBC)]: Remove exit + decl; not needed any more. + * src/main.c (main): Use return to exit, undoing yesterday's change. + The last OS that we could find where this wouldn't work is + SunOS 3.5, and that's too old to worry about now. + + * 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 + + * doc/bison.texinfo: Minor spelling and typographical fixes. Use + @acronym consistently. Standardize on "Yacc" instead of "YACC", + "Algol" instead of "ALGOL". Give a bit more history about BNF. + +2002-10-22 Akim Demaille + + * data/README: New. + +2002-10-21 Paul Eggert + + Be consistent about 'bool'; the old code used an enum in one + module and an int in another, and this violates the C standard. + * m4/stdbool.m4: New file, from coreutils 4.5.3. + * configure.ac (AC_HEADER_STDBOOL): Add. + * m4/Makefile.am (EXTRA_DIST): Add stdbool.m4. + * src/muscle_tab.c (hash_compare_muscles): (a ? FALSE : TRUE) -> (! a) + * src/symtab.c (hash_compare_symbol_t): Likewise. + * src/system.h (bool, false, true): Use a definition consistent + with ../lib/hash.c. All uses changed. + + * src/complain.c (warning_issued): Renamed from warn_message_count, + so that we needn't worry about integer overflow (!). + Now of type bool. All uses changed. + (complaint_issued): Renamed from complain_message_count; likewise. + + * src/main.c (main): Use exit to exit with failure. + + * src/complain.c (fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS + rather than 1 and 0. + * src/main.c (main): Likewise. + * src/getargs.c (getargs): Likewise. + * src/reader.c (reader): Likewise. + + * src/getarg.c (getargs): Remove duplicate code for + "Try `bison --help'". + + * src/files.c (xfopen, xfclose): Use EXIT_FAILURE rather than 2. + What was that "2" for? + + * src/complain.h (fatal, fatal_at): Add __attribute__((__noreturn__)). + * src/getargs.c (usage): Likewise. + + * src/getargs.c (getargs): When there are too few operands, report + the last one. When there are too many, report the first extra + one. This is how diffutils does it. + +2002-10-20 Paul Eggert + + Remove K&R vestiges. + * configure.ac (AC_C_CONST, AM_C_PROTOTYPES): Remove. + * src/complain.c (VA_START): Remove. Assume prototypes. + (vfprintf) [! (HAVE_VPRINTF || defined vfprintf)]: New macro. + (private_strerror, warn_at, warn, complain_at, complain, fatal_at, + fatal): Assume prototypes. + * src/complain.h: Assume prototypes. + * src/system.h (PARAMS): Remove. + Include unconditionally, since it's guaranteeed even + for a freestanding C89 compiler. + (SHRT_MIN, SHRT_MAX): Remove, since C89 guarantees them. + * src/vmsgetargs.c (getargs, cli_present, cli_get_value): Prototype. + +2002-10-20 Akim Demaille + + * src/muscle_tab.c (muscle_grow): Remove trailing debugging code. + * data/glr.c (YY_USER_FORMALS, YY_USER_ARGS): New. + (yyuserAction, yydoAction, yyglrReduce, yyresolveValue) + (yyresolveStates, yyresolveAction, yyresolveStack) + (yyprocessOneStack): Use them. + (yy_reduce_print): New. + * tests/calc.at (_AT_DATA_CALC_Y): Exercise %parse-param. + +2002-10-20 Akim Demaille + + * data/c.m4 (b4_c_ansi_args): Recognize functions with no + arguments and output `void'. + (b4_c_function): Rename as... + (b4_c_function_def): this. + (b4_c_function_decl, b4_c_ansi_function_def) + (b4_c_ansi_function_decl): New. + Change the interpretation of the arguments: before `int, foo', now + `int foo, foo'. + * data/yacc.c (yyparse): Prototype and define thanks to these. + Adjust b4_c_function_def uses. + * data/glr.c (yyparse): Likewise, but ANSI only. + +2002-10-20 Akim Demaille + + * src/output.c (prepare): Move the definition of `tokens_number', + `nterms_number', `undef_token_number', `user_token_number_max' + to... + (prepare_tokens): Here. + (prepare_tokens): Rename as... + (prepare_symbols): this. + (prepare): Move the definition of `rules_number' to... + (prepare_rules): here. + (prepare): Move the definition of `last', `final_state_number', + `states_number' to... + (prepare_states): here. + * data/yacc.c, data/lalr1.cc, data/glr.c: Normalize `>' into `<'. + +2002-10-20 Akim Demaille + + * src/tables.h, src/tables.c, src/output.c: Comment changes. + +2002-10-20 Akim Demaille + + * data/yacc.c, data/yacc.c (b4_location_if, b4_pure_if): Move to... + * data/c.m4: here. + +2002-10-20 Akim Demaille + + * src/output.c (prepare): Use MUSCLE_INSERT_STRING. + * src/muscle_tab.c (muscle_pair_list_grow): Rename `val as + `pair'. + (muscle_init): Move the `b4_ltype', `b4_maxdepth', `b4_initdepth', + `name' to... + * data/glr.c, data/lalr1.cc, data/yacc.c (b4_location_type) + (b4_stack_depth_init, b4_stack_depth_max, b4_parser_class_name): + These. + +2002-10-19 Paul Eggert + + Do not create a temporary file, as that involves security and + cleanup headaches. Instead, use a pair of pipes. + Derived from a suggestion by Florian Krohm. + * lib/subpipe.c, lib/subpipe.h, m4/subpipe.m4: New files. + * lib/mkstemp.c, lib/readpipe.c, lib/tempname.c, m4/mkstemp.m4: Remove. + * configure.ac (UTILS_FUNC_MKSTEMP, jm_PREREQ_TEMPNAME): Remove. + (BISON_PREREQ_SUBPIPE): Add. + * lib/Makefile.am (libbison_a_SOURCES): Remove readpipe.c. + Add subpipe.h, subpipe.c. + * m4/Makefile.am (EXTRA_DIST): Remove mkstemp.m4. Add subpipe.m4. + * po/POTFILES.in: Add lib/subpipe.c. + * src/output.c: Include "subpipe.h". + (m4_invoke): Remove decl. + (scan_skel): New decl. + (output_skeleton): Use pipe rather than temporary file for m4 input. + Check that m4sugar.m4 is readable, to avoid deadlock. + Check for pipe I/O error. + * src/scan-skel.l (readpipe): Remove decl. + (scan_skel): New function, to be used in place of m4_invoke. + Read from stream rather than file. + + * lib/timevar.c (TICKS_TO_MSEC, CLOCKS_TO_MSEC): Do not cast to + float, as this generates a warning on Solaris 8 + GCC 3.2 with + --enable-gcc-warnings. Instead, divide into 1.0 rather than 1; + this generates a more-accurate value anyway. + + * lib/timevar.c (timervar_accumulate): Rename locals to + avoid confusion with similarly-named more-global. + * src/muscle_tab.c (muscle_pair_list_grow): Likewise. + + * src/output.c (prepare): Use xstrdup to convert char const * + to char *, to avoid GCC warning. + +2002-10-19 Akim Demaille + + * tests/calc.at (_AT_DATA_CALC_Y): Define VAL, LOC, LEX_FORMALS, + LEX_PRE_FORMALS, LEX_ARGS, LEX_PRE_ARGS, USE_LEX_ARGS. + Use them to have `calc.y' ready for %pure-parser. + * data/yacc.c (YYLEX): Pass a yylex return type to + b4_c_function_call. + +2002-10-19 Akim Demaille + + Prototype support of %lex-param and %parse-param. + + * src/parse-gram.y: Add the definition of the %lex-param and + %parse-param tokens, plus their rules. + Drop the `_' version of %glr-parser. + Add the "," token. + * src/scan-gram.l (INITIAL): Scan them. + * src/muscle_tab.c: Comment changes. + (muscle_insert, muscle_find): Rename `pair' as `probe'. + * src/muscle_tab.h (MUSCLE_INSERT_PREFIX): Remove unused. + (muscle_entry_s): The `value' member is no longer const. + Adjust all dependencies. + * src/muscle_tab.c (muscle_init): Adjust: use + MUSCLE_INSERT_STRING. + Initialize the obstack earlier. + * src/muscle_tab.h, src/muscle_tab.c (muscle_grow) + (muscle_pair_list_grow): New. + * data/c.m4 (b4_c_function_call, b4_c_args): New. + * data/yacc.c (YYLEX): Use b4_c_function_call to honor %lex-param. + * tests/calc.at: Use %locations, not --locations. + (AT_CHECK_CALC_GLR): Use %glr-parser, not %glr_parser. + +2002-10-19 Akim Demaille + + * src/getargs.c (usage): Take status as argument and exit + accordingly. + Report the traditional `Try ... --help' message when status != 0. + (usage, version): Don't take a FILE * as arg, it is pointless. + (getargs): When there is an incorrect number of arguments, make it + an error, and report it GNUlically thanks to `usage ()'. + +2002-10-18 Paul Eggert + + * data/glr.c (yyreportParseError): Don't assume that sprintf + yields the length of the printed string, as this is not true + on SunOS 4.1.4. Reported by Peter Klein. + + * tests/calc.at (_AT_DATA_CALC_Y): #undef memcmp and realloc. + * tests/conflicts.at (%nonassoc and eof): Likewise. + Fixes SunOS 4.1.4 test failure reported by Peter Klein. + +2002-10-17 Akim Demaille + + * src/getargs.h (trace_e): Add trace_scan, and trace_parse. + * src/getargs.c (trace_types, trace_args): Adjust. + * src/reader.c (grammar_current_rule_prec_set) + (grammar_current_rule_dprec_set, grammar_current_rule_merge_set): + Standardize error messages. + And s/@prec/%prec/! + (reader): Use trace_flag to enable scanner/parser debugging, + instead of an adhoc scheme. + * src/scan-gram.l: Remove trailing debugging code. + +2002-10-16 Paul Eggert + + * src/muscle_tab.h (MUSCLE_TAB_H_): Was misspelled as + MUSCLE_TAB_H. + + * NEWS: Officially drop support for building Bison with K&R C, + since it didn't work anyway and it's not worth worrying about. + * Makefile.maint (wget_files): Remove ansi2knr.c. + (ansi2knr.c-url_prefix): Remove. + * lib/.cvsignore: Remove ansi2knr, ansi2knr.*. + * lib/Makefile.am (AUTOMAKE_OPTIONS): Remove. + * src/Makefile.am (AUTOMAKE_OPTIONS): Remove. + +2002-10-15 Paul Eggert + + Stop using the "enum_" trick for K&R-style function definitions; + it confused me, and I was the author! Instead, assume that people + who want to use K&R C compilers (when using these modules in GCC, + perhaps?) will run ansi2knr. + + * lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): Remove. + All uses of "enum_" changed to "enum ". + * lib/ebitset.c (enum_ebitset_find_mode): Likewise. + * lib/lbitset.c (enum_lbitset_find_mode): Likewise. + + * lib/abitset.c (abitset_and, abitset_and_cmp, abitset_and_or, + abitset_and_or_cmp, abitset_andn, abitset_andn_cmp, + abitset_andn_or, abitset_andn_or_cmp, abitset_bytes, abitset_copy, + abitset_copy1, abitset_disjoint_p, abitset_empty_p, + abitset_equal_p, abitset_init, abitset_list, abitset_list_reverse, + abitset_not, abitset_ones, abitset_or, abitset_or_and, + abitset_or_and_cmp, abitset_or_cmp, abitset_reset, abitset_set, + abitset_size, abitset_small_list, abitset_subset_p, abitset_test, + abitset_unused_clear, abitset_xor, abitset_xor_cmp, abitset_zero): + Use function prototypes; this removes the need for declaring + static functions simply to provide their prototypes. + * lib/bitset.c (bitset_alloc, bitset_and_or_, bitset_and_or_cmp_, + bitset_andn_or_, bitset_andn_or_cmp_, bitset_bytes, bitset_copy_, + bitset_count_, bitset_create, bitset_dump, bitset_first, + bitset_free, bitset_init, bitset_last, bitset_next, + bitset_obstack_alloc, bitset_obstack_free, bitset_only_set_p, + bitset_op4_cmp, bitset_or_and_, bitset_or_and_cmp_, bitset_prev, + bitset_print, bitset_release_memory, bitset_toggle_, + bitset_type_choose, bitset_type_get, bitset_type_name_get, + debug_bitset): Likewise. + * lib/bitset.h (bitset_set, bitset_reset, bitset_test): Likewise. + * lib/bitset_stats.c (bitset_log_histogram_print, + bitset_percent_histogram_print, bitset_stats_and, + bitset_stats_and_cmp, bitset_stats_and_or, + bitset_stats_and_or_cmp, bitset_stats_andn, bitset_stats_andn_cmp, + bitset_stats_andn_or, bitset_stats_andn_or_cmp, bitset_stats_copy, + bitset_stats_count, bitset_stats_disable, bitset_stats_disjoint_p, + bitset_stats_dump, bitset_stats_empty_p, bitset_stats_enable, + bitset_stats_equal_p, bitset_stats_free, bitset_stats_init, + bitset_stats_list, bitset_stats_list_reverse, bitset_stats_not, + bitset_stats_ones, bitset_stats_or, bitset_stats_or_and, + bitset_stats_or_and_cmp, bitset_stats_or_cmp, bitset_stats_print, + bitset_stats_print_1, bitset_stats_read, bitset_stats_reset, + bitset_stats_set, bitset_stats_size, bitset_stats_subset_p, + bitset_stats_test, bitset_stats_toggle, bitset_stats_type_get, + bitset_stats_write, bitset_stats_xor, bitset_stats_xor_cmp, + bitset_stats_zero): Likewise. + * lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free, + bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure, + bitsetv_dump, debug_bitsetv): Likewise. + * lib/ebitset.c (ebitset_and, ebitset_and_cmp, ebitset_andn, + ebitset_andn_cmp, ebitset_bytes, ebitset_copy, ebitset_copy_, + ebitset_copy_cmp, ebitset_disjoint_p, ebitset_elt_add, + ebitset_elt_alloc, ebitset_elt_calloc, ebitset_elt_find, + ebitset_elt_free, ebitset_elt_last, ebitset_elt_remove, + ebitset_elt_zero_p, ebitset_elts_grow, ebitset_empty_p, + ebitset_equal_p, ebitset_free, ebitset_init, ebitset_list, + ebitset_list_reverse, ebitset_not, ebitset_ones, ebitset_op3_cmp, + ebitset_or, ebitset_or_cmp, ebitset_release_memory, ebitset_reset, + ebitset_set, ebitset_size, ebitset_subset_p, ebitset_test, + ebitset_weed, ebitset_xor, ebitset_xor_cmp, ebitset_zero): + Likewise. + * lib/lbitset.c (debug_lbitset, lbitset_and, lbitset_and_cmp, + lbitset_andn, lbitset_andn_cmp, lbitset_bytes, lbitset_copy, + lbitset_copy_cmp, lbitset_disjoint_p, lbitset_elt_alloc, + lbitset_elt_calloc, lbitset_elt_find, lbitset_elt_free, + lbitset_elt_link, lbitset_elt_unlink, lbitset_elt_zero_p, + lbitset_empty_p, lbitset_equal_p, lbitset_free, lbitset_init, + lbitset_list, lbitset_list_reverse, lbitset_not, lbitset_ones, + lbitset_op3_cmp, lbitset_or, lbitset_or_cmp, lbitset_prune, + lbitset_release_memory, lbitset_reset, lbitset_set, lbitset_size, + lbitset_subset_p, lbitset_test, lbitset_weed, lbitset_xor, + lbitset_xor_cmp, lbitset_zero): Likewise. + +2002-10-14 Akim Demaille + + Version 1.75. + +2002-10-14 Akim Demaille + + * tests/Makefile.am (maintainer-check-posix): New. + +2002-10-14 Akim Demaille + + * data/glr.c [YYDEBUG] (YYLEFTMOST_STATE): Initialize the yyloc + member. + +2002-10-14 Akim Demaille + + * src/tables.c (table_ninf_remap): base -> tab. + Reported by Matt Rosing. + +2002-10-14 Paul Eggert + + * tests/action.at, tests/calc.at, tests/conflicts.at, + tests/cxx-type.at, tests/headers.at, tests/input.at, + tests/regression.at, tests/synclines.at, tests/torture.at: + Say "bison -o foo.c foo.y", not "bison foo.y -o foo.c", + so that the tests still work even if POSIXLY_CORRECT is set. + * doc/bison.texinfo (Rpcalc Compile, Invocation): Likewise. + + * data/c.m4 (b4_int_type): Use yysigned_char instead of signed char, + for portability to K&R hosts. Fix typo: signed char is guaranteed + only to 127, not to 128. + * data/glr.c (yysigned_char): New type. + * data/yacc.c (yysigned_char): Likewise. + * tests/regression.at (Web2c Actions): signed char -> yysigned_char. + +2002-10-13 Paul Eggert + + * data/yacc.c (yyparse): Rewrite to avoid "comparison is always + true due to limited range of data type" warning from GCC. + + * data/c.m4 (b4_token_defines): Protect against double-inclusion + by wrapping enum yytokentype's definition inside #ifndef + YYTOKENTYPE. This undoes a bug I introduced on 2002-10-12. + +2002-10-13 Akim Demaille + + * data/glr.c (yyglrShiftDefer, yyaddDeferredAction, yydoAction): + Un yy- yyrhs to avoid the name clash with the global YYRHS. + +2002-10-13 Akim Demaille + + * Makefile.maint: Update from Autoconf 2.54. + * m4/strerror_r.m4 (AC_FUNC_STRERROR_R): Remove, shipped with 2.54. + +2002-10-13 Akim Demaille + + * src/print.c (print_state): Separate the list of solved conflicts + from the other items. + * tests/conflicts.at (Resolved SR Conflicts): Adjust. + +2002-10-13 Akim Demaille + + Let nondeterministic skeletons be usable with deterministic + tables. + + With the patch, GAWK compiled by GCC without -O2 passes its test + suite using a GLR parser driven by LALR tables. It fails with -O2 + because `struct stat' gives two different answers on my machine: + 88 (definition of an auto var) and later 96 (memset on this var). + Hence the stack is badly corrumpted. The headers inclusion is to + blame: if I move the awk.h inclusion before GLR's system header + inclusion, the two struct stat have the same size. + + * src/tables.c (pack_table): Always create conflict_table. + (token_actions): Always create conflict_list. + * data/glr.c (YYFLAG): Remove, unused. + +2002-10-13 Akim Demaille + + * configure.ac (AC_GNU_SOURCE): Use it instead of hand written code. + (O0FLAGS): New. + (VALGRIND, GXX): New. + * tests/atlocal.in (CFLAGS): Use O0FLAGS. + * tests/bison.in: Run $PREBISON a pre-command. + * tests/Makefile.am (maintainer-check, maintainer-check-valgrind) + (maintainer-check-g++): New. + * Makefile.am (maintainer-check): New. + +2002-10-13 Akim Demaille + + * data/glr.c: Formatting changes. + Tweak some trace messages to match yacc.c's. + +2002-10-13 Akim Demaille + + GLR parsers sometimes raise parse errors instead of performing the + default reduction. + Reported by Charles-Henry de Boysson. + + * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Don't + check the length of the traces when %glr. + (_AT_CHECK_CALC_ERROR): Also skip `^Stack' lines, coming from + GLR's traces. + (AT_CHECK_CALC_LALR, AT_CHECK_CALC_GLR): New. + Test GLR parsers. + * data/glr.c (YYLEFTMOST_STATE): Fix its value. + (yyltype): Remove the yy prefix from the member names. + (yytable): Complete its comment. + (yygetLRActions): Map error action number from YYTABLE from + YYTABLE_NINF to 0. + (yyisErrorAction): No longer compare YYACTION to YYPACT_NINF + (which was a bug: it should have been YYTABEL_NINF, and yet it was + not satisfying as we could compare an YYACTION computed from + YYDEFACT to YYTABLE_NINF although they are unrelated): 0 is the + only value for error actions. + (yyreportParseError): In verbose parse error messages, don't issue + `error' in the list of expected tokens. + * data/yacc.c (yyparse) : Rewrite the decoding of the + next action to perform to match glr.c's decoding. + (yytable): Complete its comment. + +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. + * src/scan-gram.l (rule_length): New static var. + Use it to keep track of the rule length in the scanner, since + we can't expect the parser to be in lock-step sync with the scanner. + (handle_action_dollar, handle_action_at): Use this var. + * tests/actions.at (Exotic Dollars): Test for the problem. + +2002-10-12 Paul Eggert + + * lib/timevar.c [! IN_GCC && HAVE_SYS_TIME_H]: Include . + * m4/timevar.m4 (BISON_PREREQ_TIMEVAR): Check for . + 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. + + * lib/timevar.c, lib/timevar.h, lib/timevar.def: Import + GCC version as of today, then merge Bison's changes. + Change "GCC" to "Bison" in copyright notice. timevar.def's + author is Akim, so change that too. + + * 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 + + * data/yacc.c (yyreport_parse_error): Remove, putting its body into... + (yyparse): here. This undoes some of the 2002-07-25 change. + Compatibility problem reported by Ralf S. Engelschall with + OSSP cfg . + 2002-10-11 Akim Demaille * tests/regression.at Characters Escapes): New.