X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/b50d2359d7608270561abd5c3cbf6e84834c2019..a85284cfbd1334c940e65b59c44ada379029e074:/ChangeLog diff --git a/ChangeLog b/ChangeLog index 2f19228a..30d15330 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,468 @@ +2005-12-21 Akim Demaille + + YYACCEPT, YYERROR, and YYABORT, as user actions, should not + destroy the RHS symbols of a rule. + * data/yacc.c (yylen): Initialize to 0. + Keep its value to the number of items to possibly shift. + In particular, a regular successful parse that ends on YYFINAL by + a (internal) YYACCEPT must not have yylen != 0. + (yyerrorlab, yyreturn): Pop the RHS. + Reorder a bit to emphasize the `shifting' bits of code. + (YYPOPSTACK): Now accept a number of items to pop. + * data/lalr1.cc: Likewise. + * data/glr.c: Formatting changes. + Use goto instead of fall through. + * doc/bison.texinfo (Destructor Decl): Complete. + +2005-12-20 Juan Manuel Guerrero + + * Makefile.am: DJGPP specific files added to EXTRA_DIST. + * djgpp/Makefile.maint: Fix PACKAGE variable computation. + * djgpp/config.bat: Replace every occurence of the file name + scan-gram-c.c with c-scan-gram.c. The same for scan-skel-c.c with + c-scan-skel.c to conform with the 8.3 file name restriction on MSDOS. + * djgpp/config.sed: Replace every occurence of the file name + scan-gram-c.c with c-scan-gram.c. The same for scan-skel-c.c with + c-scan-skel.c to conform with the 8.3 file name restriction on MSDOS. + * djgpp/djunpack.bat: DJGPP specific file. + * djgpp/fnchange.lst: DJGPP specific file. + * djgpp/README.in: Add new information about how to unpack the bison + source on MSDOS and other systems which have 8.3 file name restrictions + using djunpack.bat and fnchange.lst. + +2005-12-12 Paul Eggert + + * bootstrap (build_cvs_prefix): Remove; unused. + (CVS_PREFIX): Adjust to yesterday's Savannah reorganization + when getting gnulib. + +2005-12-12 "Joel E. Denny" + + * data/glr.c: Reorder typedef declarations for structs to match order + of struct declarations. + Rename yystack everywhere to yystackp except in yyparse where it's not + a pointer. + (yyglrShift): Change parameter YYSTYPE yysval to YYSTYPE* yyvalp for + consistency. + (yyis_table_ninf): Change 0 to YYID (0) to pacify lint. + (yyreportSyntaxError): Add /*ARGSUSED*/ to pacify lint. + (yyparse): Change while (yytrue) to while ( YYID (yytrue)) to pacify + lint. + +2005-12-09 Paul Eggert + + * tests/sets.at (Accept): Fix typos in regular expression used to + sed out the final state number. + + Work around portability problem on Solaris 10: flex-generated + files include before , which messes up + because the latter defines __EXTENSIONS__. Address the problem + by creating two new little files that include first, + then include the flex-generated files. Rewrite everyone else + to include first, as well. + * lib/timevar.c: Always include "config.h". + * src/Makefile.am (bison_SOURCES): Replace scan-gram.l with + scan-gram-c.c, and scan-skel.l with scan-skel-c.c. + (EXTRA_bison_SOURCES): New macro. + * src/scan-gram-c.c, src/scan-skel-c.c: New files. + * src/system.h: Don't include config.h. + * src/LR0.c: Include first. + * src/assoc.c: Likewise. + * src/closure.c: Likewise. + * src/complain.c: Likewise. + * src/conflicts.c: Likewise. + * src/derives.c: Likewise. + * src/files.c: Likewise. + * src/getargs.c: Likewise. + * src/gram.c: Likewise. + * src/lalr.c: Likewise. + * src/location.c: Likewise. + * src/main.c: Likewise. + * src/muscle_tab.c: Likewise. + * src/nullable.c: Likewise. + * src/output.c: Likewise. + * src/parse-gram.y: Likewise. + * src/print.c: Likewise. + * src/print_graph.c: Likewise. + * src/reader.c: Likewise. + * src/reduce.c: Likewise. + * src/relation.c: Likewise. + * src/state.c: Likewise. + * src/symlist.c: Likewise. + * src/symtab.c: Likewise. + * src/tables.c: Likewise. + * src/uniqstr.c: Likewise. + * src/vcg.c: Likewise. + + * src/parse-gram.y: Fix minor problems uncovered by lint. + (current_lhs, current_lhs_location): Now static. + (current_assoc): Remove unused variable. + + Cleanups so that Bison-generated parsers have less lint. + * data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): + Prepend /*ARGSUSED*/, for lint's sake. + * data/glr.c (YYUSE): Properly parenthesize, and use an alternate + definition if 'lint' is defined. + (YYID): New macro (or function, if lint). + All uses of /*CONSTCOND*/0 replaced by YYID(0). + * data/yacc.c: Likewise. + * data/glr.c (yyuserAction, yyuserMerge, yy_reduce_print): + (yyrecoverSyntaxError): Prepend /*ARGSUSED*/. + * data/glr.cc (YYLLOC_DEFAULT): Omit /*CONSTCOND*/ since this code + is C++ only. + * data/lalr1.cc (YYUSE): Just use a cast, since this code is C++ only. + * data/yacc.c (YYSTACK_FREE) [defined YYSTACK_ALLOC]: + Use YYID(0) rather than 0, for lint. + (yystrlen): Rewrite to avoid lint warning about ptrdiff_t overflow. + (yysyntax_error): Rewrite to avoid lint warnings about parenthesization. + +2005-12-07 Paul Eggert + + * tests/glr-regression.at + (Improper handling of embedded actions and dollar(-N) in GLR parsers): + Close memory leak reported by twlevo. + +2005-12-06 "Joel E. Denny" + + * data/glr.c (yyprocessOneStack, yyparse): Synchronize the shift for + all stacks. + (yyparse): Iterate another stack in order to call user destructors. + * tests/glr-regression.at (No users destructors if stack 0 deleted): + New test case. + (Duplicated user destructor for lookahead): This test now is expected + to succeed. + +2005-12-01 Paul Eggert + + * NEWS: Document the following change. + * data/yacc.c: Say "parser skeleton" rather than "file", since + it's no longer just a file. + * data/glr.c: Grant a special exception for C GLR parsers, that + reads like the already-existing exception for C LALR(1) parsers. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/location.cc: Likewise. + * data/yacc.c: Reword the "written by" statement to clarify that + it was the parser skeleton, not the entire output file. + * data/glr.c: Written by Paul Hilfinger. + * data/glr.cc: Written by Akim Demaille. + * data/lalr1.cc: Likewise. + +2005-11-18 Paul Eggert + + * data/yacc.c (yy_reduce_print, YY_REDUCE_PRINT): + Fix typos in previous change that broke 'make check'. + YY_REDUCE_PRINT cannot be a pseudo-varargs macro; that isn't + supported in C. + * tests/calc.at (_AT_CHECK_CALC,_AT_CHECK_CALC_ERROR): + Don't check NUM-STDERR-LINES, since the output format is fluctuating. + We can revert this once things settle down. + + * src/conflicts.c (conflicts_print): Don't print file name twice + when %expect fails because there were no conflicts. + * doc/bison.texinfo (Expect Decl): Tighten up wording in previous + change. + * tests/conflicts.at (%expect not enough, %expect too much): + (%expect with reduce conflicts): Adjust to new behavior. + +2005-11-18 Akim Demaille + + * src/conflicts.c (conflicts_print): Unsatisfied %expectation are + errors. + * NEWS: Document this. + * doc/bison.texinfo (Expect Decl): Likewise. + +2005-11-16 Akim Demaille + + Generalize the display of semantic values and locations in traces. + * data/glr.c (yy_reduce_print): Fix indices (again). + * data/c++.m4 (b4_rhs_value, b4_rhs_location): Don't expect + literal integers. + * data/lalr1.cc (yyreduce_print): Rename as... + (yy_reduce_print): this. + Display values and locations. + * data/yacc.c (yy_reduce_print): Likewise. + (YY_REDUCE_PRINT): Adjust to pass the required arguments. + (yysymprint): Move higher to be visible from yy_reduce_print). + (yyparse): Adjust. + * tests/calc.at: Adjust the expected length of the traces. + +2005-11-14 Akim Demaille + + * data/glr.c (yy_reduce_print): The loop was quite wrong: type are + from 1 to N, while values and location start at 0. + (b4_rhs_location, b4_rhs_value): Add parens around $1 and $2. + +2005-11-14 Akim Demaille + + * data/glr.c (yy_reduce_print): Fix the $ number. + +2005-11-14 Akim Demaille + + "Use" parse parameters. + * data/c.m4 (b4_parse_param_for, b4_parse_param_use): New. + * data/glr.c, data/glr.cc: Use them. + * data/glr.c (YYUSE): Have a C++ definition that supports + non-pointer types. + +2005-11-14 Akim Demaille + + * data/glr.c (yyexpandGLRStack): Declare only if defined. + +2005-11-14 Akim Demaille + + * data/glr.cc: New. + * data/m4sugar/m4sugar.m4 (m4_prepend): New. + +2005-11-12 Akim Demaille + + Let position and location be PODs. + * data/location.cc (position::initialize, location::initialize): New. + (position::position, location::location): Define only if + b4_location_constructors is defined. + * data/lalr1.cc (b4_location_constructors): Define it for backward + compatibility. + * doc/bison.texinfo (Initial Action Decl): Use initialize. + +2005-11-12 Akim Demaille + + * data/lalr1.cc: Move the body of the ctor and dtor into the + parser file (instead of the header). + Wrap the implementations in a "namespace yy". + +2005-11-12 Akim Demaille + + Have glr.c include its header file when created. + * data/glr.c (b4_shared_declarations): New. + Output them verbatim in the parser if !%defines, otherwise + output then in the header file, and include it instead. + +2005-11-11 Akim Demaille + + * data/glr.c: Comment changes. + +2005-11-11 Akim Demaille + + When yydebug, report semantic and location values for reductions. + * data/glr.c (yy_reduce_print): Report the semantic values and the + locations. + (YY_REDUCE_PRINT): Adjust. + (yyglrReduce): Use them. + (b4_rhs_value, b4_rhs_location): Remove m4_eval invocations. + * data/c.m4 (b4_yysymprint_generate): Specify the const arguments. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Remove the reduction + traces. + +2005-11-10 Akim Demaille + + * data/glr.c (yynewGLRStackItem, YY_RESERVE_GLRSTACK): New. + (yyaddDeferredAction, yyglrShift, yyglrShiftDefer): Use them. + (yyexpandGLRStack, YYRELOC): Define only when YYSTACKEXPANDABLE. + +2005-11-09 Albert Chin-A-Young + + * m4/cxx.m4, examples/Makefile.am: Don't build + examples/calc++ if no C++ compiler is available. (trivial change) + +2005-11-09 Akim Demaille + + * src/scan-skel.l: Use a couple of asserts. + +2005-11-03 Akim Demaille + + In some (weird) cases, the final state number is incorrect. + Reported by Alexandre Duret-Lutz. + * src/LR0.c (state_list_append): Remove the computation of + final_state. + (save_reductions): Do it here. + (get_state): Alpha conversion. + (generate_states): Use a for loop. + * src/gram.h (item_number_is_rule_number) + (item_number_is_symbol_number): New. + * src/state.c: Use assert. + * src/system.h: Include assert.h. + * tests/sets.at (Accept): New. + +2005-10-30 Paul Hilfinger + + * data/glr.c (yyfill): Adjust comment. + (yyresolveAction): Initialize default location properly + for empty right-hand sides. + (yydoAction): Ditto. + Add comment explaining apparently dead code. + * tests/glr-regression.at + (Incorrectly initialized location for empty right-hand side in GLR): + New test. + +2005-10-30 Paul Eggert + + * bootstrap (cleanup_gnulib): New function. Use it to clean up + gnulib when interrupted. This fixes some race conditions and + works around some portability problems (one noted by Paul + Hilfinger). + +2005-10-22 Akim + + * Makefile.cfg: Adjust to config -> build-aux. + Reported by twledo. + +2005-10-21 Akim Demaille + + * data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): Pass + the %parse-params. + * data/glr.c (YY_SYMBOL_PRINT, yydestroyGLRState): Adjust. + * data/yacc.c (b4_Pure_if): Rename as... + (b4_yacc_pure_if): this. + (YY_SYMBOL_PRINT, yyparse): Adjust. + * doc/bison.texinfo: Formatting changes. + +2005-10-21 Akim Demaille + + Finish the transition config -> build-aux. + * configure.ac, Makefile.am: Use build-aux. + * config/prev-version, config/announce-gen, config/Makefile.am: + Move to... + * build-aux/prev-version, build-aux/announce-gen, + * build-aux/Makefile.am: here. + +2005-10-14 Akim Demaille + + * examples/calc++/test: Use set -x only when VERBOSE. + +2005-10-13 Paul Eggert + + * NEWS: Bison now warns if it finds a stray `$' or `@' in an action. + * src/scan-gram.l ([$@]): Implement this. + +2005-10-13 Akim Demaille + + * src/scan-skel.l: Output the base name parts of the parser and + header file names. + * tests/output.at (AT_CHECK_OUTPUT): Support subdirectories, and + additional checks. + Use this to exercise C++ outputs in subdirs. + Reported by Oleg Smolsky. + +2005-10-12 Paul Eggert + + * data/c.m4 (b4_c_function_def): Look at __C99_FUNC__, not at + __STDC_VERSION__, as IBM cc 7.0 doesn't define the latter either. + Problem reported by John P. Hartmann. + * data/yacc.c (YYMODERN_C): Likewise. Don't define if the user has + already defined it. + +2005-10-12 Akim Demaille + + * src/parse-gram.y (version_check): Exit 63 to please missing + (stands for "version mismatch). + * tests/input.at, doc/bison.texinfo: Adjust. + +2005-10-10 Paul Eggert + + Work around portability problems with Visual Age C compiler + (xlc and xlC_r) reported by John P. Hartmann. + * data/location.cc (initial_column, initial_line): Remove. + All uses replaced by 0 and 1. + * src/scan-gram.l (gram_wrap): Redefine to avoid bug in flex 2.5.31 + that xlc complains about. + * src/scan-skel.l (skel_wrap): Likewise. + * data/c.m4 (b4_c_function_def): Look at __STDC_VERSION__ as well + as __STDC__. + * data/yacc.c (YYMODERN_C): New macro, which also looks at + __STDC_VERSION__. Use it everywhere instead of looking at + __STDC__ and __cplusplus. + +2005-10-10 Akim Demaille + + * examples/calc++/test: Be quiet unless VERBOSE. + +2005-10-05 Paul Eggert + + * data/c.m4 (yydestruct, yysymprint): + Use YYUSE instead of casting to void. + * data/glr.c (YYUSE): New macro. + (yyuserMerge, yyreportAmbiguity, yyreportSyntaxError): + Use it instead of rolling our own. + (YYLLOC_DEFAULT, YYCHK, YYDPRINTF, YY_SYMBOL_PRINT, YY_REDUCE_PRINT): + (YYCHK1): + Use /*CONSTCOND*/ to suppress lint warnings. + * data/lalr1.cc (YYLLOC_DEFAULT, YY_SYMBOL_PRINT, YY_REDUCE_PRINT): + (YY_STACK_PRINT): Use 'false' not '0'. + (YYUSE): New macro. + (yysymprint_, yydestruct_): Use it instead of rolling our own. + * data/yacc.c (YYUSE): New macro. + (YYCOPY, YYSTACK_RELOCATE, YYBACKUP, YYLLOC_DEFAULT): + (YYDPRINTF, YY_SYMBOL_PRINT, YY_STACK_PRINT, YY_REDUCE_PRINT): + (yyerrorlab): Use /*CONSTCOND*/ to suppress lint warnings. + + + * data/m4sugar/m4sugar.m4 (_m4_map): New macro. + (m4_map, m4_map_sep): Use it. Handle the empty list correctly. + +2005-10-04 Paul Eggert + + Undo the parts of the unlocked-I/O change that substituted + putc or puts for printf. This might hurt performance a bit, + but some people prefer the printf style. + * data/c.m4 (yysymprint): Prefer printf to puts and putc. + * data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): Remove. + All uses replaced by YYFPRINTF and YYDPRINTF. + * data/yacc.c: Likewise. + * lib/bitset.c (bitset_print): Likewise. + * lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer printf to + putc and puts. + * lib/lbitset.c (debug_lbitset): Likewise. + * src/closure.c (print_firsts, print_fderives): Likewise. + * src/gram.c (grammar_dump): Likewise. + * src/lalr.c (look_ahead_tokens_print): Likewise. + * src/output.c (escaped_output): Likewise. + (user_actions_output): Break apart two printfs. + * src/parse-gram.y (%printer): Prefer printf to putc and puts. + * src/reduce.c (reduce_print): Likewise. + * src/state.c (state_rule_look_ahead_tokens_print): Likewise. + * src/system.h: Include unlocked-io.h rathe than stdio.h. + + * data/glr.c (yyuserMerge, yyreportAmbiguity, yyreportSyntaxError): + Use assignments rather than casts-to-void to suppress + unused-variable warnings. This pacifies 'lint'. + * data/lalr1.cc (yysymprint_, yydestruct_): Use a call to suppress + unused-variable warnings. + +2005-10-03 Juan Manuel Guerrero + + * Makefile.am: DJGPP specific files added to EXTRA_DIST. + +2005-10-02 Paul Eggert + + Use unlocked I/O for a minor performance improvement on hosts like + GNU/Linux and Solaris that support unlocked I/O. The basic idea + is to use the gnlib unlocked-io module, and to prefer putc and + puts to printf when either will work (since the latter doesn't + come in an unlocked flavor). + * bootstrap (gnulib_modules): Add unlocked-io. + * data/c.m4 (yysymprint): Prefer puts and putc to printf. + * data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): New macros. + Prefer them to YYFPRINTF and YYDPRINTF if either will do, + and similarly for puts and putc and printf. + * data/yacc.c: Likewise. + * lib/bitset.c (bitset_print): Likewise. + * lib/bitset.h [USE_UNLOCKED_IO]: Include unlocked-io.h. + * lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer putc and puts + to printf. + * lib/lbitset.c (debug_lbitset): Likewise. + * src/closure.c (print_firsts, print_fderives): Likewise. + * src/gram.c (grammar_dump): Likewise. + * src/lalr.c (look_ahead_tokens_print): Likewise. + * src/output.c (escaped_output): Likewise. + (user_actions_output): Coalesce two printfs. + * src/parse-gram.y (%printer): Prefer putc and puts to printf. + * src/reduce.c (reduce_print): Likewise. + * src/state.c (state_rule_look_ahead_tokens_print): Likewise. + * src/system.h: Include unlocked-io.h rather than stdio.h. + + * data/lalr1.cc: Don't put an unmatched ' in a dnl comment, as + this confuses xgettext. + 2005-10-02 Akim Demaille * bootstrap (gnulib_modules): Add strverscmp. @@ -5807,7 +6272,7 @@ 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. + 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. @@ -5952,7 +6417,7 @@ struct lbitset_struct, struct bitset_stats_struct): New types. All uses of struct bitset_struct changed to union bitset_union, etc. - * lib/abitset.c (struct abitset_struct, abitset, + * lib/abitset.c (struct abitset_struct, abitset, struct bitset_struct): Remove. * lib/bitset_stats.c (struct bitset_stats_struct, bitset_stats, struct bitset_struct): Remove. @@ -7038,7 +7503,7 @@ 2002-06-28 Akim Demaille - * src/reader.h: s/grammer_current_rule_merge_set/grammar_.../. + * src/reader.h: s/grammer_current_rule_merge_set/grammar_.../. * src/conflicts.c (conflicts_total_count): `i' is unsigned, to pacify GCC. * src/output.c (save_row): Initialize all the variables to pacify GCC. @@ -7068,7 +7533,7 @@ * src/getargs.c: * src/symlist.h: Add dprec and merger fields to symbol_list_s. - * src/symlist.c (symbol_list_new): Initialize dprec and merger fields. + * src/symlist.c (symbol_list_new): Initialize dprec and merger fields. Originally 2002-06-16 Paul Hilfinger @@ -9075,8 +9540,8 @@ 2002-01-20 Marc Autret - * src/system.h: Need to define __attribute__ away for non-GCC - compilers as well (i.e. the vendor C compiler). + * src/system.h: Need to define __attribute__ away for non-GCC + compilers as well (i.e., the vendor C compiler). Suggested by Albert Chin-A-Young. 2002-01-11 Tim Van Holder @@ -10246,7 +10711,7 @@ * src/warshall.c (bitmatrix_print): New. (TC): Use it. - When performing a transitive closure R(i, j) && R(j, k) => R(i, k), + When performing a transitive closure R(i, j) && R(j, k) => R(i, k), j must be the outer loop. * tests/regression.at (Broken Closure): New. @@ -11831,7 +12296,7 @@ * src/output.c (output): Delete call to reader_output_yylsp. * src/reader.c (reader): Likewise. - * src/reader.h: Delete declaration of reader_output_yylsp. + * src/reader.h: Delete declaration of reader_output_yylsp. 2001-09-02 Marc Autret