X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/68254a0303c9bb368769b01cd4b9cab28488ab78..630e182b7ba2257805c49424c96b9dc03a113668:/ChangeLog diff --git a/ChangeLog b/ChangeLog index eec6aa99..d08aba9f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,6 +1,271 @@ +2001-12-05 Akim Demaille + + Because useless nonterminals are now kept alive (instead of being + `destroyed'), we now sometimes examine them, and store information + related to them. Hence we need to know their number, and adjust + memory allocations. + + * src/reduce.c, src/reduce.h (nuseless_nonterminals): No longer + static. + * src/LR0.c (allocate_itemsets): The memory allocated to + `symbol_count' was used for two different purpose: once to count + the number of occurrences of each symbol, and later reassigned to + `shift_symbol', containing the symbol that can be shifted from a + given state. + Deobfuscate, i.e., allocate, use and free `symbol_count' here + only, and... + (new_itemsets): Allocate `shift_symbol' here. + (allocate_itemsets): symbol_count includes useless nonterminals. + Make room for them. + (free_storage): Use `free', not `XFREE', for pointers that cannot + be null. + + +2001-12-05 Akim Demaille + + * src/nullable.c (set_nullable): Deobfuscate the handling of + ritem. + `symbol >= 0' is wrong now, use `rule_table[ruleno].useful'. + + +2001-12-05 Akim Demaille + + * src/gram.c, src/gram.h (ritem_print): New. + * src/gram.c (dummy): Remove, now there is actual code in gram.c. + (This useless function was defined only to work around VMS linkers + that can't handle compilation units with variables only). + * src/reduce.c (dump_grammar): Use it to trace the construction of + ritem. + +2001-12-04 Paul Eggert + + * src/bison.simple (union yyalloc): Change member names + to be the same as the stack names. + (yyparse): yyptr is now union yyalloc *, not char *. + (YYSTACK_RELOCATE): Likewise. This avoids a GCC warning, + and may generate better code on some machines. + (yystpcpy): Use prototype if __STDC__ is defined, not just + if __cplusplus is defined. + +2001-11-30 Akim Demaille + + * configure.in (WARNING_CFLAGS): Add -Werror when possible. + (CFLAGS): Do not include the WARNING_CFLAGS here, since GNU + Gettext doesn't compile cleanly, and dies with -Werror. + * src/Makefile.am, lib/Makefile.am, tests/atlocal.in (CFLAGS): + Include WARNING_CFLAGS here. + * lib/xstrdup.c: Include xalloc.h, so that xstrdup be declared + before being defined. + +2001-11-27 Paul Eggert + + * lib/quotearg.h (quotearg_n, quotearg_n_style): + First arg is int, not unsigned. + * lib/quotearg.c (quotearg_n, quotearg_n_style): Likewise. + (SIZE_MAX, UINT_MAX): New macros. + (quotearg_n_options): Abort if N is negative. + Avoid overflow check on hosts where size_t is 64 bits and int + is 32 bits, as overflow is impossible there. + Fix off-by-one typo that caused unnecessary reallocation. + +2001-11-29 Paul Eggert + + Name space cleanup in generated parser. + + * doc/bison.texinfo (Bison Parser): Discuss system headers + and their effect on the user name space. + + * src/bison.simple: + (YYSTACK_ALLOC, YYSTACK_FREE, union yyalloc, YYSTACK_GAP_MAX, + YYSTACK_BYTES, YYSTACK_RELOCATE): Do not define unless necessary, + i.e. unless ! defined (yyoverflow) || defined (YYERROR_VERBOSE). + + (YYSIZE_T): New macro. Use it instead of size_t, to avoid infringing + on user names when possible. + + (YYSTACK_USE_ALLOCA): Do not define; just use any existing defn. + Simplify test for whather exists. + + (): Include if we will use malloc, and if standard C or C++. + + (): Include if YYDEBUG. + + (yymemcpy): Renamed from __yy_memcpy. Do not define unless + ! defined (yyoverflow) && ! defined (yymemcpy). + + (yymemcpy, yyparse): Rename local variables as needed so that + they all begin with 'yy'. + + (yystrlen, yystpcpy): New functions. + + (YY_DECL_NON_LSP_VARIABLES): Renamed from _YY_DECL_VARIABLES. + All uses changed. + + (yyparse): size_t -> YYSIZE_T. Use yystrlen and yystpcpy + instead of relying on string.h functions. Use YYSTACK_ALLOC + and YYSTACK_FREE instead of malloc and free. + +2001-11-30 Akim Demaille + + * src/bison.simple (YYSTYPE, YYLTYPE): Move their definitions + before their first uses. + (YYBISON, YYPURE): Move to the top of the output. + +2001-11-30 Akim Demaille + + * tests/reduce.at (Useless Nonterminals): Fix. + +2001-11-30 Akim Demaille + + * src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty + if body instead of `;' to pacify GCC's warnings. + +2001-11-30 Akim Demaille + + Instead of mapping the LHS of unused rules to -1, keep the LHS + valid, but flag the rules as invalid. + + * src/gram.h (rule_t): `useful' is a new member. + * src/print.c (print_grammar): Adjust. + * src/derives.c (set_derives): Likewise. + * src/reader.c (packgram, reduce_output): Likewise. + * src/reduce.c (reduce_grammar_tables): Likewise. + * tests/reduce.at (Underivable Rules, Useless Rules): New. + +2001-11-30 Akim Demaille + + * src/reduce.c (reduce_output): Formatting changes. + * src/print.c (print_results, print_grammar): Likewise. + * tests/regression.at (Rule Line Numbers) + (Solved SR Conflicts, Unresolved SR Conflicts): Adjust. + +2001-11-30 Akim Demaille + + * src/reduce.c (nonterminals_reduce): Instead of throwing away + useless nonterminals, move them at the end of the symbol arrays. + (reduce_output): Adjust. + * tests/reduce.at (Useless Nonterminals): Adjust. + +2001-11-30 Akim Demaille + + * src/reduce.c: Various comment/formatting changes. + (nonterminals_reduce): New, extracted from... + (reduce_grammar_tables): here. + (reduce_grammar): Call nonterminals_reduce. + +2001-11-29 Paul Eggert + + * src/bison.simple (YYSTACK_REALLOC): Remove. + (YYSTACK_ALLOC): Resurrect this macro, with its old meaning. + (YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE): + New macros. + (union yyalloc): New type. + (__yy_memcpy): Last arg is size_t, not unsigned int, to remove + an arbitrary restriction on hosts where size_t is wider than int. + + (yyparse): Don't dump core if alloca or malloc fails; instead, report + a parser stack overflow. Allocate just one block of memory for all + three stacks, instead of allocating three blocks; this typically is + faster and reduces fragmentation. + + Do not limit the number of items in the stack to a value that fits + in 'int', as this is an arbitrary limit on hosts with 64-bit + size_t and 32-bit int. + +2001-11-29 Marc Autret + + * tests/calc.at [AT_DATA_CALC_Y]: Use %error-verbose instead + of defining YYERROR_VERBOSE. + [AT_DATA]: $4 is now out of C declarations in the prologue. + +2001-11-28 Marc Autret + + * src/reader.c (parse_dquoted_param): New. + (parse_skel_decl): Use it. + * src/lex.h: Add its prototype. + * src/lex.c (literalchar): Become not static. + +2001-11-28 Marc Autret + + * src/output.h: And put its extern declaration here. + * src/output.c (error_verbose): Define here. + (prepare): Echo name modification. + * src/getargs.h: Clean its extern declaration. + * src/getargs.c (error_verbose_flag): Remove. + (getargs): Remove case 'e'. + * src/options.c (option_table): 'error-verbose' is now seen as simple + percent option. + Include output.h. + + * src/reader.c (read_declarations): Remove case tok_include. + (parse_include_decl): Remove. + * src/lex.h (token_t): Remove tok_include. + * src/options.c (option_table): 'include' is now a simple command line + option. + +2001-11-28 Marc Autret + + * src/bison.simple: Adjust muscle names. + * src/muscle_tab.c (muscle_init): Also rename the muscles. + * src/output.c (prepare): s/_/-/ for the muscles names. + (output_parser): When scanning for a muscle, allow '-' instead of '_'. + +2001-11-28 Marc Autret + + * src/bison.simple: Fix debug. + [YYERROR_VERBOSE]: Re-integrate as an internal macro. + +2001-11-28 Akim Demaille + + * src/LR0.c (shifts_new): New. + (save_shifts, insert_start_shift, augment_automaton): Use it. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): `b' and `ruleno' denote the same value: + keep ruleno only. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): Instead of looping over word in array + then bits in words, loop over bits in array. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): No longer optimize the special case + where all the bits of `ruleset[r]' are set to 0, to make the code + clearer. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): `r' and `c' are new variables, used to + de-obfuscate accesses to RULESET and CORE. + +2001-11-28 Akim Demaille + + * src/reduce.c (reduce_print): Use ngettext. + (dump_grammar): Improve the trace accuracy. + +2001-11-28 Akim Demaille + + * src/reduce.c (dump_grammar): Don't translate trace messages. + +2001-11-28 Akim Demaille + + * tests/reduce.at (Useless Terminals, Useless Nonterminals): New. + * src/reduce.c (reduce_grammar_tables): Do not free useless tags, + as all tags are free'ed afterwards. + From Enrico Scholz. + +2001-11-27 Paul Eggert + + * src/bison.simple (YYSTACK_REALLOC): Fix typo that caused us to + use alloca when we didn't want to, and vice versa. + 2001-11-27 Marc Autret - * src/muscle_tab.c (muscle_init): Remove 'verbose' muscle initialization. + * src/muscle_tab.c (muscle_init): Remove 'verbose' muscle + initialization. * src/output.c (prepare): Remove its update. 2001-11-27 Marc Autret