X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/473d0a75671169bda82caff3803b91ece9514cae..9e32add8e6e9ba278655142e1aa0a85773f18cc7:/ChangeLog?ds=sidebyside diff --git a/ChangeLog b/ChangeLog index a5ff13ec..7c5dee4d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,371 @@ +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. + +2002-10-24 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.