+2002-08-12 Paul Eggert <eggert@twinsun.com>
+
+ Version 1.49b.
+
+ * Makefile.am (SUBDIRS): Remove intl.
+ (DISTCLEANFILES): Remove.
+ * NEWS: Mention that GNU M4 is now required. Clarify what is
+ meant by "larger grammars". Mention the pt_BR translation.
+ * configure.in (AC_CHECK_DECLS): Add getenv, getopt.
+ (AM_GNU_GETTEXT_VERSION): New macro, replacing GETTEXT_VERSION var.
+ Bump version from 0.11.2 to 0.11.5.
+ (BISON_PREREQ_STAGE): Remove.
+ (AM_GNU_GETTEXT): Use external gettext.
+ (AC_OUTPUT): Remove intl/Makefile.
+
+ * config/depcomp, config/install-sh: Sync with Automake 1.6.3.
+
+ * data/glr.c: Include string.h, for strlen.
+ (yyreportParseError): Use size_t for yysize.
+ (yy_yypstack): No longer nested inside yypstates, as nested
+ functions are not portable. Do not assume size_t is the
+ same width as int.
+ (yypstates): Do not assume that ptrdiff_t is the same width
+ as int, and similarly for yyposn and YYINDEX.
+
+ * data/yacc.c: Fix comment about `$$ = $1': it can copy garbage.
+
+ * lib/Makefile.am (INCLUDES): Do not include from the intl
+ directory, which has been removed.
+ * src/Makefile.am (INCLUDES): Likewise.
+
+ * lib/Makefile.am (libbison_a_SOURCES): Add unlocked-io.h.
+ (bitsets_sources, additional_bitsets_sources, timevars_sources):
+ New vars.
+
+ * lib/Makefile.am (libbison_a_SOURCES): Avoid +=, a GNU make extension.
+ * tests/Makefile.am (EXTRA_DIST): Likewise.
+
+ * lib/abitset.c (abitset_reverse_list, ebitset_reverse_list):
+ Do not assume that bitset_windex is the same width as unsigned.
+
+ * lib/abitset.c (abitset_unused_clear): Do not assume that
+ bitset_word is the same width as int.
+ * lib/bbitset.h (BITSET_INDEX_MAX, BITSET_MSB): Likewise.
+ * lib/bitset.h (bitset_set, bitset_reset): Likewise.
+ * lib/bitset_stats.c (bitset_stats_set, bitset_stats_reset): Likewise.
+ * lib/ebitset.c (ebitset_set, ebitset_reset): Likewise.
+ * lib/lbitset.c (lbitset_set, lbitset_reset): Likewise.
+
+ * lib/abitset.c (abitset_op1): Use -1, not ~0, as memset arg (for
+ portability to one's complement hosts!).
+ * lib/ebitset.c (ebitset_op1): Likewise.
+ * lib/lbitset.c (lbitset_op1): Likewise.
+
+ * lib/argmatch.c, lib/quotearg.c, quotearg.h: Sync with GNU tar.
+ * lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h,
+ lib/hash.c, lib/hash.h, lib/strnlen.c, lib/xmalloc.c:
+ Sync with fileutils.
+ * lib/error.c, lib/getopt.c, lib/getopt.h, lib/getopt1.c,
+ lib/gettext.h: Sync with diffutils.
+
+ * lib/memrchr.c, lib/mkstemp.c, lib/strchr.c, lib/strnlen.c,
+ lib/strspn.c, lib/tempname.c: Use GPL, not LGPL.
+
+ * lib/obstack.c, lib/obstack.h: Sync with fileutils, except use
+ PROTOTYPES to check for prototypes, and "defined __STDC__" to
+ check for void *.
+
+ * lib/bbitset.h (BITSET_WORD_BITS): Now of type unsigned, not
+ size_t; the old version tried to do this but casted improperly.
+ (bitset_bindex, bitset_windex): Now size_t, not unsigned long.
+ (bitset_test): Now returns int, not unsigned long.
+
+ * lib/bitset_stats.c: Include "gettext.h".
+ (_): New macro.
+ (bitset_stats_set, bitset_stats_reset, bitset_stats_test): Don't
+ name locals "index", as it generates unnecessary warnings on some
+ hosts that have an "index" function.
+
+ * lib/bitset_stats.c (bitset_stats_print_1, bitset_stats_print,
+ bitset_stats_read, bitset_stats_write): Wrap strings in _() if
+ they need translation.
+ * src/LR0.c (state_list_append, new_itemsets, get_state,
+ append_states, generate_states): Likewise.
+ * src/assoc.c (assoc_to_string): Likewise.
+ * src/closure.c (print_closure, set_firsts, closure): Likewise.
+ * src/gram.c (grammar_dump): Likewise.
+ * src/injections.c (injections_compute): Likewise.
+ * src/lalr.c (lookaheads_print): Likewise.
+ * src/relation.c (relation_transpose): Likewise.
+ * src/scan-gram.l: Likewise.
+ * src/tables.c (table_grow, pack_vector): Likewise.
+
+ * m4/Makefile.am (EXTRA_DIST): Remove codeset.m4,
+ glibc21.m4, isc-posix.m4 lcmessage.m4, stage.m4.
+ * m4/malloc.m4, m4/realloc.m4: Sync with diffutils.
+ * m4/mbstate_t.m4: Sync with fileutils.
+ * m4/prereq.m4 (jm_PREREQ_QUOTEARG): AC_MBSTATE_T -> AC_TYPE_MBSTATE_T.
+
+ * po/LINGUAS: Add pt_BR.
+ * po/POTFILES.in: Add src/assoc.c, src/closure.c, src/gram.c,
+ src/main.c, src/relation.c, src/state.c, lib/bitset_stats.c,
+ lib/timevar.c.
+ Use src/parse-gram.y instead of src/parse-gram.c, as the gettext
+ manual recommends.
+ Similarly, use src/scan-gram.l instead of src/scan-gram.c.
+
+ * src/complain.c (strerror_r): Remove decl; not needed.
+ (strerror): Use same pattern as ../lib/error.c.
+
+ * src/files.c, src/files.h (compute_header_macro): Remove; unused.
+
+ * src/gram.c (grammar_dump): Do not assume ptrdiff_t fits in int.
+
+ * src/main.c (main): Cast result of bindtextdomain and textdomain
+ to void, to avoid a GCC warning when --disable-nls is in effect.
+
+ * src/scan-gram.l: Use strings rather than escapes when possible,
+ to minimize the number of warnings from xgettext.
+ (handle_action_dollar, handle_action_at): Don't use isdigit,
+ as it mishandles negative chars and it may not work as expected
+ outside the C locale.
+
+ * src/symtab.c (symbol_get): Don't cast LHS of an assignment;
+ this is a GCC extension and is not portable to other compilers.
+
+ * src/system.h (alloca): Use same pattern as ../lib/error.c.
+ Do not include <ctype.h>; no longer needed.
+ Do not include <malloc.h>; no longer needed (and generates
+ warnings on OpenBSD 3.0).
+
+ * tests/cxx-type.at (yylex): Do not pass signed char to isupper;
+ it's not portable.
+
+ * tests/regression.at: Do not use 'cc -c input.c -o input';
+ Sun C rejects this. Instead, use 'cc -c input.c -o input.o'.
+
+ * tests/synclines.at (AC_SYNCLINES_COMPILE): Accept any nonzero
+ exit status as failure, not just exit status 1. Sun C exits
+ with status 2 sometimes.
+
+ * tests/torture.at (AT_INCREASE_DATA_SIZE): New macro.
+ Use it for the two large tests.
+
+2002-08-02 Akim Demaille <akim@epita.fr>
+
+ * src/conflicts.c (conflicts_output): Don't output rules never
+ reduced here, since anyway that computation doesn't work.
+ * src/gram.h, src/gram.h (rule_filter_t, rule_useful_p)
+ (rule_useless_p, rule_never_reduced_p): New.
+ (grammar_rules_partial_print): Use a filter instead of a range.
+ Display the title only if needed.
+ (grammar_rules_print): Adjust.
+ (grammar_rules_never_reduced_report): New.
+ * src/tables.c (action_row): Move the computation of rules never
+ reduced to...
+ (token_actions): here.
+ * src/main.c (main): Make the parser before making the report, so
+ that rules never reduced are computed.
+ Call grammar_rules_never_reduced_report.
+ * src/print.c (print_results): Report rules never reduced.
+ * tests/conflicts.at, tests/reduce.at: Adjust.
+
+2002-08-01 Akim Demaille <akim@epita.fr>
+
+ Instead of attaching lookaheads and duplicating the rules being
+ reduced by a state, attach the lookaheads to the reductions.
+
+ * src/state.h (state_t): Remove the `lookaheads',
+ `lookaheads_rule' member.
+ (reductions_t): Add a `lookaheads' member.
+ Use a regular array for the `rules'.
+ * src/state.c (reductions_new): Initialize the lookaheads member
+ to 0.
+ (state_rule_lookaheads_print): Adjust.
+ * src/state.h, src/state.c (state_reductions_find): New.
+ * src/conflicts.c (resolve_sr_conflict, set_conflicts)
+ (count_rr_conflicts): Adjust.
+ * src/lalr.c (LArule): Remove.
+ (add_lookback_edge): Adjust.
+ (state_lookaheads_count): New.
+ (states_lookaheads_initialize): Merge into...
+ (initialize_LA): this.
+ (lalr_free): Adjust.
+ * src/main.c (main): Don't free nullable and derives too early: it
+ is used by --verbose.
+ * src/print.c, src/print_graph.c, src/tables.c: Adjust.
+
+2002-08-01 Akim Demaille <akim@epita.fr>
+
+ * src/derives.h, src/derives.c (derives): A `rule_t***' instead of
+ `rule_number_t**'.
+ (set_derives, free_derives): Rename as...
+ (derives_compute, derives_free): this.
+ Adjust all dependencies.
+ * src/nullable.c (set_nullable, free_nullable): Rename as...
+ (nullable_compute, nullable_free): these.
+ (rule_list_t): Store rule_t *, not rule_number_t.
+ * src/state.c (state_rule_lookaheads_print): Directly compare rule
+ pointers, instead of their numbers.
+ * src/main.c (main): Call nullable_free, and derives_free earlier,
+ as they were lo longer used.
+
+2002-08-01 Akim Demaille <akim@epita.fr>
+
+ * lib/timevar.c (get_time): Include children time.
+ * src/lalr.h (LA, LArule): Don't export them: used with the
+ state_t.
+ * src/lalr.c (LA, LArule): Static.
+ * src/lalr.h, src/lalr.c (lalr_free): New.
+ * src/main.c (main): Call it.
+ * src/tables.c (pack_vector): Check whether loc is >= to the
+ table_size, not >.
+ (pack_tables): Don't free froms, tos, conflict_tos, and pos...
+ (tables_generate): do it, since that's also it which allocates
+ them.
+ Don't free LA and LArule, main does.
+
+2002-07-31 Akim Demaille <akim@epita.fr>
+
+ Separate parser tables computation and output.
+
+ * src/output.c (nvectors, base_t, base, base_ninf, conflict_table)
+ (conflict_list, conflict_list_cnt, table, check, table_ninf)
+ (yydefgoto, yydefact, high): Move to...
+ * src/tables.h, src/tables.c: here.
+ * src/output.c (vector_number_t, VECTOR_NUMBER_MAX)
+ (VECTOR_NUMBER_MIN, state_number_to_vector_number)
+ (symbol_number_to_vector_number, nvectors, BASE_MAX, BASE_MIN)
+ (froms, tos, conflict_tos, tally, width, action_t, ACTION_MAX)
+ (ACTION_MIN, actrow, order, nentries, pos, conflrow)
+ (conflict_list_free, table_size, lowzero, table_grow, conflict_row)
+ (action_row, save_row, token_actions, save_column, default_goto)
+ (goto_actions, sort_actions, matching_state, pack_vector)
+ (table_ninf_remap, pack_table, prepare_actions): Move to...
+ * src/tables.c: here.
+ * src/tables.h, src/tables.c(tables_generate, tables_free): New.
+ * src/output.c (token_actions, output_base, output_conflicts)
+ (output_check): Merge into...
+ (prepare_actions): this.
+ (actions_output): Rename as...
+ (user_actions_output): this.
+ * src/main.c (main): Call tables_generate and tables_free.
+
+2002-07-31 Akim Demaille <akim@epita.fr>
+
+ Steal GCC's --time-report support.
+
+ * lib/timevar.c, lib/timevar.h, lib/timevar.def: New,
+ stolen/adjusted from GCC.
+ * m4/stage.m4: Remove time related checks.
+ * m4/timevar.m4: New.
+ * configure.in: Adjust.
+ * src/system.h: Adjust to using timevar.h.
+ * src/getargs.h, src/getargs.c: Support trace_time for
+ --trace=time.
+ * src/main.c (stage): Remove.
+ (main): Replace `stage' invocations with timevar calls.
+ * src/output.c: Insert pertinent timevar calls.
+
+2002-07-31 Akim Demaille <akim@epita.fr>
+
+ Let --trace have arguments.
+
+ * src/getargs.h (enum trace_e): New.
+ * src/getargs.c (trace_args, trace_types, trace_argmatch): New.
+ (long_options, short_options): --trace/-T takes an optional
+ argument.
+ Change all the uses of trace_flag to reflect the new flags.
+ * tests/sets.at (Firsts, Nullable, Broken Closure): Use --trace=sets.
+
+ Strengthen `stage' portability.
+
+ * m4/stage.m4 (BISON_PREREQ_STAGE): New.
+ * configure.in: Use it.
+ Don't check for malloc.h and sys/times.h.
+ * src/system.h: Include them when appropriate.
+ * src/main.c (stage): Compile only when mallinfo, struct mallinfo,
+ times and struct tms are available.
+
+2002-07-30 Akim Demaille <akim@epita.fr>
+
+ In verbose parse error message, don't report `error' as an
+ expected token.
+ * tests/actions.at (Printers and Destructors): Adjust.
+ * tests/calc.at (Calculator $1): Adjust.
+ * data/yacc.c, data/glr.c, data/lalr1.c: When making the verbose
+ error message, do not report the parser accepts the error token in
+ that state.
+
+2002-07-30 Akim Demaille <akim@epita.fr>
+
+ Normalize conflict related messages.
+
+ * src/complain.h, src/complain.c (warn, complain): New.
+ * src/conflicts.c (conflicts_print): Use them.
+ (conflict_report_yacc): New, extracted from...
+ (conflicts_print): here.
+ * tests/conflicts.at, tests/existing.at: Adjust.
+
+2002-07-30 Akim Demaille <akim@epita.fr>
+
+ Report rules which are never reduced by the parser: those hidden
+ by conflicts.
+
+ * src/LR0.c (save_reductions): Don't make the final state too
+ different: save its reduction (accept) instead of having a state
+ without any action (no shift or goto, no reduce).
+ Note: the final state is now a ``regular'' state, i.e., the
+ parsers now contain `reduce 0' as default reduction.
+ Nevertheless, since they decide to `accept' when yystate =
+ final_state, they still will not reduce rule 0.
+ * src/print.c (print_actions, print_reduction): Adjust.
+ * src/output.c (action_row): Track reduced rules.
+ (token_actions): Report rules never reduced.
+ * tests/conflicts.at, tests/regression.at: Adjust.
+
+2002-07-30 Akim Demaille <akim@epita.fr>
+
+ `stage' was accidently included in a previous patch.
+ Initiate its autoconfiscation.
+
+ * configure.in: Look for malloc.h and sys/times.h.
+ * src/main.c (stage): Adjust.
+ Report only when trace_flag.
+
+2002-07-29 Akim Demaille <akim@epita.fr>
+
+ * src/state.h, src/state.c (transitions_t): Holds state_t*'s, not
+ state_number_t.
+ (errs_t): symbol_t*, not symbol_number_t.
+ (reductions_t): rule_t*, not rule_number_t.
+ (FOR_EACH_SHIFT): New.
+ * src/LR0.c, src/conflicts.c, src/lalr.c, src/output.c
+ * src/print.c, src/print_graph.c: Adjust.
+
+2002-07-29 Akim Demaille <akim@epita.fr>
+
+ Use $accept and $end, as BYacc and BTYacc do, instead of $axiom and $.
+
+ * src/symtab.h, src/symtab.c (eoftoken, axiom): Rename as...
+ (endtoken, accept): these.
+ * src/reader.c (reader): Set endtoken's default tag to "$end".
+ Set undeftoken's tag to "$undefined" instead of "$undefined.".
+ * doc/bison.texinfo (Table of Symbols): Mention $accept and $end.
+ Adjust.
+
+2002-07-29 Akim Demaille <akim@epita.fr>
+
+ * src/reduce.c (reduce_grammar): When the language is empty,
+ complain about the start symbol, not the axiom.
+ Use its location.
+ * tests/reduce.at (Empty Language): New.
+
+2002-07-26 Akim Demaille <akim@epita.fr>
+
+ * src/reader.h, src/reader.c (gram_error): ... can't get
+ yycontrol without making too strong assumptions on the parser
+ itself.
+ * src/output.c (prepare_tokens): Use the real 0th value of
+ token_translations instead of `0'.
+ * src/parse-gram.y (yyerror): Don't rely on yycontrol being
+ visible here.
+ * data/yacc.c (yyreport_parse_error): Rename yylocation as yylloc
+ for the time being: %locations ought to provide it to yyerror.
+
+2002-07-25 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (prepare_tokens): Go up to ntokens, not ntokens + 1.
+ * doc/bison.texinfo (Decl Summary): s/$illegal/$undefined./.
+ * tests/regression.at (Web2c Actions): Adjust.
+
+2002-07-25 Akim Demaille <akim@epita.fr>
+
+ Stop storing rules from 1 to nrules + 1.
+
+ * src/LR0.c, src/closure.c, src/derives.c, src/gram.c, src/lalr.c
+ * src/nullable.c, src/output.c, src/print.c, src/reader.c
+ * src/reduce.c: Allocate and free from &rules[0], not &rules[1].
+ Iterate from 0 to nrules.
+ Use rule_number_as_item_number and item_number_as_rule_number.
+ Adjust to `derive' now containing possibly 0.
+ * src/gram.h (rule_number_as_item_number, item_number_as_rule_number):
+ Handle the `- 1' part in rule numbers from/to item numbers.
+ * src/conflicts.c (log_resolution): Fix the message which reversed
+ shift and reduce.
+ * src/output.c (action_row): Initialize default_rule to -1.
+ (token_actions): Adjust.
+ * tests/sets.at (Nullable, Firsts): Fix the previously bogus
+ expected output.
+ * tests/conflicts.at (Resolved SR Conflicts): Likewise.
+
+2002-07-25 Akim Demaille <akim@epita.fr>
+
+ * data/c.m4 (b4_c_function, b4_c_ansi_args, b4_c_ansi_arg)
+ (b4_c_knr_arg_names, b4_c_knr_arg_name, b4_c_knr_arg_decls)
+ (b4_c_knr_arg_decl): New.
+ * data/yacc.c: Use it to define yysymprint, yydestruct, and
+ yyreport_parse_error.
+
+2002-07-25 Akim Demaille <akim@epita.fr>
+
+ * data/yacc.c (yyreport_parse_error): New, extracted from...
+ (yyparse): here.
+ (yydestruct, yysymprint): Move above yyparse.
+ Be K&R compliant.
+
+2002-07-25 Akim Demaille <akim@epita.fr>
+
+ * data/c.m4 (b4_ints_in, b4_int_type, b4_int_type_for): New,
+ replace...
+ (b4_sint_type, b4_uint_type): these.
+ * data/yacc.c, data/glr.c, data/lalr1.cc: Use b4_int_type_for.
+ * tests/regression.at (Web2c Actions): Adjust.
+
+2002-07-25 Akim Demaille <akim@epita.fr>
+
+ * src/gram.h (TIEM_NUMBER_MAX): New.
+ (item_number_of_rule_number, rule_number_of_item_number): Rename
+ as...
+ (rule_number_as_item_number, item_number_as_rule_number): these.
+ Adjust dependencies.
+ * src/output.c (vector_number_t, VECTOR_NUMBER_MAX)
+ (VECTOR_NUMBER_MIN, state_number_to_vector_number)
+ (symbol_number_to_vector_number): New.
+ (order): Of vector_number_t* type.
+ (base_t, BASE_MAX, BASE_MIN): New.
+ (froms, tos, width, pos, check): Of base_t type.
+ (action_number_t, ACTION_MIN, ACTION_MAX): New.
+ (actrow): Of action_number_t type.
+ (conflrow): Of unsigned int type.
+ (table_ninf, base_ninf): New.
+ (GENERATE_MUSCLE_INSERT_TABLE): Also output the `*_min' value.
+ (muscle_insert_int_table, muscle_insert_base_table)
+ (muscle_insert_rule_number_table): New.
+ (prepare_tokens): Output `toknum' as int_table.
+ (action_row): Returns a rule_number_t.
+ Use ACTION_MIN, not SHRT_MIN.
+ (token_actions): yydefact is rule_number_t*.
+ (table_ninf_remap): New.
+ (pack_table): Use it for `base' and `table'.
+ * data/yacc.c, data/glr.c, data/lalr1.cc (YYFLAG): Remove,
+ replaced with...
+ (YYPACT_NINF, YYTABLE_NINF): these.
+ (yypact, yytable): Compute their types instead of hard-coded
+ `short'.
+ * tests/regression.at (Web2c Actions): Adjust.
+
+2002-07-19 Akim Demaille <akim@epita.fr>
+
+ * src/scan-gram.l (id): Can start with an underscore.
+
+2002-07-16 Akim Demaille <akim@epita.fr>
+
+ * src/assoc.c, src/asssoc.h (assoc_t, assoc_to_string): New.
+ Adjust all former `associativity' dependencies.
+ * src/symtab.c (symbol_new): Default associativity is `undef', not
+ `right'.
+ (symbol_check_alias_consistence): Adjust.
+
+2002-07-09 Akim Demaille <akim@epita.fr>
+
+ * doc/bison.texinfo: Properly set the ``header'' part.
+ Use @dircategory ``GNU programming tools'' as per Texinfo's
+ documentation.
+ Use @copying.
+
+2002-07-09 Akim Demaille <akim@epita.fr>
+
+ * lib/quotearg.h: Protect against multiple inclusions.
+ * src/location.h (location_t): Add a `file' member.
+ (LOCATION_RESET, LOCATION_PRINT): Adjust.
+ * src/complain.c (warn_at, complain_at, fatal_at): Drop
+ `error_one_per_line' support.
+
+2002-07-09 Akim Demaille <akim@epita.fr>
+
+ * src/complain.h, src/complain.c (warn, complain): Remove, unused.
+ * src/reader.c (lineno): Remove.
+ Adjust all dependencies.
+ (get_merge_function): Take a location and use complain_at.
+ * src/symtab.h, src/symtab.c (symbol_make_alias): Likewise.
+ * tests/regression.at (Invalid inputs, Mixing %token styles):
+ Adjust.
+
+2002-07-09 Akim Demaille <akim@epita.fr>
+
+ * src/parse-gram.y (rules_or_grammar_declaration): Add an error
+ recovery rule, and forbid extensions when --yacc.
+ (gram_error): Use complain_at.
+ * src/reader.c (reader): Exit if there were parse errors.
+
+2002-07-09 Akim Demaille <akim@epita.fr>
+
+ * tests/synclines.at (AT_SYNCLINES_COMPILE): New.
+ (AT_TEST_SYNCLINE): Adjust to unusual GCC outputs.
+ Reported by R Blake <blakers@mac.com>.
+
+2002-07-09 Akim Demaille <akim@epita.fr>
+
+ * data/yacc.c: Output the copyright notive in the header.
+
+2002-07-03 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (froms, tos): Are state_number_t.
+ (save_column): sp, sp1, and sp2 are state_number_t.
+ (prepare): Rename `final' as `final_state_number', `nnts' as
+ `nterms_number', `nrules' as `rules_number', `nstates' as
+ `states_number', and `ntokens' as `tokens_number'. Remove `nsym',
+ unused.
+ * data/yacc.c, data/glr.c, data/lalr1.cc: Adjust.
+ * data/lalr1.cc (nsym_): Remove, unused.
+
+2002-07-03 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.h, src/lalr.c (goto_number_t): New.
+ * src/lalr.c (goto_list_t): New.
+ Propagate them.
+ * src/nullable.c (rule_list_t): New.
+ Propagate.
+ * src/types.h: Remove.
+
+2002-07-03 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (print_fderives): Use rule_rhs_print.
+ * src/derives.c (print_derives): Use rule_rhs_print.
+ (rule_list_t): New, replaces `shorts'.
+ (set_derives): Add comments.
+ * tests/sets.at (Nullable, Firsts): Adjust.
+
+2002-07-03 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (prepare_actions): Free `tally' and `width'.
+ (prepare_actions): Allocate and free `order'.
+ * src/symtab.c (symbols_free): Free `symbols'.
+ * src/scan-gram.l (scanner_free): Clear Flex's scanners memory.
+ * src/output.c (m4_invoke): Move to...
+ * src/scan-skel.l: here.
+ (<<EOF>>): Close yyout, and free its name.
+
+2002-07-03 Akim Demaille <akim@epita.fr>
+
+ Fix some memory leaks, and fix a bug: state 0 was examined twice.
+
+ * src/LR0.c (new_state): Merge into...
+ (state_list_append): this.
+ (new_states): Merge into...
+ (generate_states): here.
+ (set_states): Don't ensure a proper `errs' state member here, do it...
+ * src/conflicts.c (conflicts_solve): here.
+ * src/state.h, src/state.c: Comment changes.
+ (state_t): Rename member `shifts' as `transitions'.
+ Adjust all dependencies.
+ (errs_new): For consistency, also take the values as argument.
+ (errs_dup): Remove.
+ (state_errs_set): New.
+ (state_reductions_set, state_transitions_set): Assert that no
+ previous value was assigned.
+ (state_free): New.
+ (states_free): Use it.
+ * src/conflicts.c (resolve_sr_conflict): Don't use an `errs_t' as
+ temporary storage: use `errs' and `nerrs' as elsewhere.
+ (set_conflicts): Allocate and free this `errs'.
+
+2002-07-02 Akim Demaille <akim@epita.fr>
+
+ * lib/libiberty.h: New.
+ * lib: Update the bitset implementation from upstream.
+ * src/closure.c, src/lalr.c, src/output.c, src/print_graph.c,
+ * src/state.c: Use BITSET_FOR_EACH, not BITSET_EXECUTE.
+ * src/main.c: Adjust bitset stats calls.
+
+2002-07-01 Paul Eggert <eggert@twinsun.com>
+
+ * src/scan-gram.l (<SC_ESCAPED_CHARACTER>): Convert to unsigned
+ char, so that negative chars don't collide with $.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ Have the GLR tests be `warning' checked, and fix the warnings.
+
+ * data/glr.c (YYFPRINTF): Always define it, not only when YYDEBUG
+ (yyuserAction, yyreportAmbiguity): `Use' all the arguments.
+ (yyremoveDeletes): `yyi' and `yyj' are size_t.
+ Use YYFPRINTF when under if (YYDEBUG) to avoid empty `if' bodies.
+ (yyaddDeferredAction): static.
+ (yyglrReduce): yyi, yyk, amd yyposn are size_t.
+ (yyreportParseError): yyprefix is const.
+ yytokenp is used only when verbose.
+ (yy__GNUC__): Replace with __GNUC__.
+ (yypdumpstack): yyi is size_t.
+ (yypreference): Un-yy local variables and arguments, to avoid
+ clashes with `yyr1'. Anyway, we are not in the user name space.
+ (yytname_size): be an int, as is compared with ints.
+ * tests/testsuite.at (AT_COMPILE, AT_PARSER_CHECK): New.
+ Use them.
+ * tests/cxx-gram.at: Use quotation to protect $1.
+ Use AT_COMPILE to enable warnings hunts.
+ Prototype yylex and yyerror.
+ `Use' argc.
+ Include `string.h', not `strings.h'.
+ Produce and prototype stmtMerge only when used.
+ yylex takes a location.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ We spend a lot of time in quotearg, in particular when --verbose.
+
+ * src/symtab.c (symbol_get): Store a quoted version of the key.
+ (symbol_tag_get, symbol_tag_get_n, symbol_tag_print): Remove.
+ Adjust all callers.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/state.h (reductions_t): Rename member `nreds' as num.
+ (errs_t): Rename members `nerrs' and `errs' as `num' and `symbols'.
+ * src/state.c (ERRS_ALLOC, REDUCTIONS_ALLOC): Use the correct types.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/state.h, src/state.c (shift_t, SHIFT_SYMBOL, SHIFT_IS_SHIFT)
+ (SHIFT_IS_GOTO, SHIFT_IS_ERROR, SHIFT_DISABLE, SHIFT_IS_DISABLED)
+ (shifts_to): Rename as...
+ (transition_t, TRANSITION_SYMBOL, TRANSITION_IS_TRANSITION)
+ (TRANSITION_IS_GOTO, TRANSITION_IS_ERROR, TRANSITION_DISABLE)
+ (TRANSITION_IS_DISABLED, transitions_to): these.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/print.c (print_shifts, print_gotos): Merge into...
+ (print_transitions): this.
+ (print_transitions, print_errs, print_reductions): Align the
+ lookaheads columns.
+ (print_core, print_transitions, print_errs, print_state,
+ print_grammar): Output empty lines separator before, not after.
+ (state_default_rule_compute): Rename as...
+ (state_default_rule): this.
+ * tests/conflicts.at (Defaulted Conflicted Reduction),
+ (Unresolved SR Conflicts, Resolved SR Conflicts): Adjust.
+ * tests/regression.at (Rule Line Numbers, Web2c Report): Adjust.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ Display items as we display rules.
+
+ * src/gram.h, src/gram.c (rule_lhs_print): New.
+ * src/gram.c (grammar_rules_partial_print): Use it.
+ * src/print.c (print_core): Likewise.
+ * tests/conflicts.at (Defaulted Conflicted Reduction),
+ (Unresolved SR Conflicts): Adjust.
+ (Unresolved SR Conflicts): Adjust and rename as...
+ (Resolved SR Conflicts): this, as was meant.
+ * tests/regression.at (Web2c Report): Adjust.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/print.c (state_default_rule_compute): New, extracted from...
+ (print_reductions): here.
+ Pessimize, but clarify the code.
+ * tests/conflicts.at (Defaulted Conflicted Reduction): New.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/output.c (action_row): Let default_rule be always a rule
+ number.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/closure.c (print_firsts, print_fderives, closure):
+ Use BITSET_EXECUTE.
+ * src/lalr.c (lookaheads_print): Likewise.
+ * src/state.c (state_rule_lookaheads_print): Likewise.
+ * src/print_graph.c (print_core): Likewise.
+ * src/print.c (print_reductions): Likewise.
+ * src/output.c (action_row): Likewise.
+ Use SHIFT_IS_DISABLED, SHIFT_IS_SHIFT and SHIFT_SYMBOL.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/print_graph.c: Use report_flag.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/lalr.c (traverse, digraph, matrix_print, transpose): Move
+ to...
+ * src/relation.h, src/relation.c (traverse, relation_digraph)
+ (relation_print, relation_transpose): New.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/state.h, src/state.c (shifts_to): New.
+ * src/lalr.c (build_relations): Use it.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/gram.h (rule_number_t, RULE_NUMBER_MAX, int_of_rule_number)
+ (item_number_of_rule_number, rule_number_of_item_number): New.
+ * src/LR0.c, src/closure.c, src/derives.c, src/derives.h,
+ * src/gram.c, src/lalr.c, src/nullable.c, src/output.c, src/print.c,
+ * src/print_graph.c, src/reader.c, src/reduce.c, src/reduce.h:
+ Propagate their use.
+ Much remains to be done, in particular wrt `shorts' from types.h.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/symtab.c (symbol_new): Initialize the `printer' member.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (save_reductions): Remove, replaced by...
+ * src/state.h, src/state.c (state_reductions_set): New.
+ (reductions, errs): Rename as...
+ (reductions_t, errs_t): these.
+ Adjust all dependencies.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/LR0.c (state_list_t, state_list_append): New.
+ (first_state, last_state): Now symbol_list_t.
+ (this_state): Remove.
+ (new_itemsets, append_states, save_reductions): Take a state_t as
+ argument.
+ (set_states, generate_states): Adjust.
+ (save_shifts): Remove, replaced by...
+ * src/state.h, src/state.c (state_shifts_set): New.
+ (shifts): Rename as...
+ (shifts_t): this.
+ Adjust all dependencies.
+ * src/state.h (state_t): Remove the `next' member.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/vcg.c (quote): Use slot 2, since we often pass symbol tag
+ escaped in slot 0.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ Use hash.h for the state hash table.
+
+ * src/LR0.c (STATE_HASH_SIZE, state_hash): Remove.
+ (allocate_storage): Use state_hash_new.
+ (free_storage): Use state_hash_free.
+ (new_state, get_state): Adjust.
+ * src/lalr.h, src/lalr.c (states): Move to...
+ * src/states.h (state_t): Remove the `link' member, no longer
+ used.
+ * src/states.h, src/states.c: here.
+ (state_hash_new, state_hash_free, state_hash_lookup)
+ (state_hash_insert, states_free): New.
+ * src/states.c (state_table, state_compare, state_hash): New.
+ * src/output.c (output_actions): Do not free states now, since we
+ still need to know the final_state number in `prepare', called
+ afterwards. Do it...
+ * src/main.c (main): here: call states_free after `output'.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/state.h, src/state.c (state_new): New, extracted from...
+ * src/LR0.c (new_state): here.
+ * src/state.h (STATE_ALLOC): Move to...
+ * src/state.c: here.
+ * src/LR0.h, src/LR0.c (nstates, final_state): Move to...
+ * src/state.h, src/state.c: here.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/reader.c (gensym): Rename as...
+ * src/symtab.h, src/symtab.c (dummy_symbol_get): this.
+ (getsym): Rename as...
+ (symbol_get): this.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ * src/state.h (state_number_t, STATE_NUMBER_MAX): New.
+ * src/LR0.c, src/LR0.h, src/conflicts.c, src/lalr.c, src/lalr.h,
+ * src/output.c, src/print.c, src/print_graph.c: Propagate.
+ * src/LR0.h, src/LR0.h (final_state): Is a state_t*.
+
+2002-06-30 Akim Demaille <akim@epita.fr>
+
+ Make the test suite pass with warnings checked.
+
+ * tests/actions.at (Printers and Destructors): Improve.
+ Avoid unsigned vs. signed issues.
+ * tests/calc.at: Don't exercise the scanner here, do it...
+ * tests/input.at (Torturing the Scanner): here.
+
+2002-06-28 Paul Hilfinger <Hilfinger@CS.Berkeley.EDU>
+
+ * data/glr.c: Correct typo in Emacs-mode directive. Slightly
+ reorganize first lines parallel to yacc.c.
+
+2002-06-28 Akim Demaille <akim@epita.fr>
+
+ * data/c.m4 (b4_copyright, b4_sint_type, b4_uint_type, b4_token_define)
+ (b4_token_enum, b4_token_defines): New, factored from...
+ * data/lalr1.cc, data/yacc.c, glr.c: here.
+
+2002-06-28 Akim Demaille <akim@epita.fr>
+
+ * data/yacc.c (yydestruct, yysymprint): Pacify GCC warnings for
+ unused variables.
+ * src/output.c (merger_output): static.
+
+2002-06-28 Akim Demaille <akim@epita.fr>
+
+ * 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.
+
+2002-06-27 Paul Hilfinger <Hilfinger@CS.Berkeley.EDU>
+
+ Accumulated changelog for new GLR parsing features.
+
+ * src/conflicts.c (count_total_conflicts): Change name to
+ conflicts_total_count.
+ * src/conflicts.h: Ditto.
+ * src/output.c (token_actions): Use the new name.
+ (output_conflicts): Change conflp => conflict_list_heads, and
+ confl => conflict_list for better readability.
+ * data/glr.c: Use the new names.
+ * NEWS: Add self to GLR announcement.
+
+ * src/reader.c (free_merger_functions): Cleanup: XFREE->free.
+
+ * doc/bison.texinfo (GLR Parsers): Make corrections suggested by
+ Akim Demaille.
+
+ * data/bison.glr: Change name to glr.c
+ * data/glr.c: Renamed from bison.glr.
+ * data/Makefile.am: Add glr.c
+
+ * 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.
+
+ Originally 2002-06-16 Paul Hilfinger <Hilfinger@CS.Berkeley.EDU>
+
+ * data/bison.glr: Be sure to restore the
+ current #line when returning to the skeleton contents after having
+ exposed the input file's #line.
+
+ Originally 2002-06-13 Paul Hilfinger <Hilfinger@CS.Berkeley.EDU>
+
+ * data/bison.glr: Bring up to date with changes to bison.simple.
+
+ Originally 2002-06-03 Paul Hilfinger <Hilfinger@CS.Berkeley.EDU>
+
+ * data/bison.glr: Correct definitions that use b4_prefix.
+ Various reformatting.
+ (GLRStack): Make yychar (in YYPURE case) and yytokenp as part of stack.
+ (yyreportParseError, yyrecoverParseError, yyprocessOneStack): remove
+ yytokenp argument; now part of stack.
+ (yychar): Define to behave as documented.
+ (yyclearin): Ditto.
+
+ Originally 2002-05-14 Paul Hilfinger <Hilfinger@CS.Berkeley.EDU>
+
+ * src/reader.h: Add declaration for free_merger_functions.
+
+ * src/reader.c (merge_functions): New variable.
+ (get_merge_function): New function.
+ (free_merger_functions): New function.
+ (readgram): Check for %prec that is not followed by a symbol.
+ Handle %dprec and %merge declarations.
+ (packgram): Initialize dprec and merger fields in rules array.
+
+ * src/output.c (conflict_tos, conflrow, conflict_table, conflict_list,
+ conflict_list_cnt, conflict_list_free): New variables.
+ (table_grow): Also grow conflict_table.
+ (prepare_rules): Output dprec and merger tables.
+ (conflict_row): New function.
+ (action_row): Output conflict lists for GLR parser. Don't use
+ default reduction in conflicted states for GLR parser so that there
+ are spaces for the conflict lists.
+ (save_row): Also save conflict information.
+ (token_actions): Allocate conflict list.
+ (merger_output): New function.
+ (pack_vector): Pack conflict table, too.
+ (output_conflicts): New function to output yyconflp and yyconfl.
+ (output_check): Allocate conflict_tos.
+ (output_actions): Output conflict tables, also.
+ (output_skeleton): Output b4_mergers definition.
+ (prepare): Output b4_max_rhs_length definition.
+ Use 'bison.glr' as default skeleton for GLR parsers.
+
+ * src/gram.c (glr_parser): New flag.
+ (grammar_free): Call free_merger_functions.
+
+ * src/conflicts.c (count_rr_conflicts): Augment to optionally count
+ all pairs of conflicting reductions, rather than just all tokens
+ causing conflicts. Needed to size conflict tables.
+ (conflicts_output): Modify call to count_rr_conflicts for new
+ interface.
+ (conflicts_print): Ditto.
+ (count_total_conflicts): New function.
+
+ * src/reader.h (merger_list): New type.
+ (merge_functions): New variable.
+
+ * src/lex.h (tok_dprec, tok_merge): New token types.
+
+ * src/gram.h (rule_s): Add dprec and merger fields.
+ (glr_parser): New flag.
+
+ * src/conflicts.h (count_total_conflicts): New function.
+
+ * src/options.c (option_table): Add %dprec, %merge, and %glr-parser.
+
+ * doc/bison.texinfo (Generalized LR Parsing): New section.
+ (GLR Parsers): New section.
+ (Language and Grammar): Mention GLR parsing.
+ (Table of Symbols): Add %dprec, %glr-parser, %merge, GLR
+ Correct typo ("tge" -> "the").
+
+ * data/bison.glr: New skeleton for GLR parsing.
+
+ * tests/cxx-gram.at: New tests for GLR parsing.
+
+ * tests/testsuite.at: Include cxx-gram.at.
+
+ * tests/Makefile.am: Add cxx-gram.at.
+
+ * src/parse-gram.y:
+
+ * src/scan-gram.l: Add %dprec, %glr-parser, %merge.
+
+ * src/parse-gram.y: Grammar for %dprec, %merge, %glr-parser.
+
+2002-06-27 Akim Demaille <akim@epita.fr>
+
+ * src/options.h, src/options.c: Remove.
+ * src/getargs.c (short_options, long_options): New.
+
+2002-06-27 Akim Demaille <akim@epita.fr>
+
+ * data/bison.simple, data/bison.c++: Rename as...
+ * data/yacc.c, data/lalr1.cc: these.
+ * doc/bison.texinfo (Environment Variables): Remove.
+
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