X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/4d7370cb4fe960032afd4a42293b6d55e02237fe..41f58bae8b4adc853c44beaa749683cab33faff1:/ChangeLog diff --git a/ChangeLog b/ChangeLog index f8867cbc..ab7be133 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,203 @@ +2006-09-15 Paul Eggert <eggert@cs.ucla.edu> + + Port to GCC 2.95. First two problems reported by Michael Deutschmann in + <http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00018.html>. + + * src/parse-gram.y (symbol_declaration): Don't put statements + before declarations; it's not portable to C89. + * src/scan-code.l (handle_action_at): Likewise. + + * src/scan-code.l: Always initialize braces_level; the old code + left it uninitialized and therefore had undefined behavior. + + Don't attempt to redefine 'assert', since it runs afoul of + systems where standard headers (mistakenly) include <assert.h>. + Instead, define and use our own alternative, called 'aver'. + * src/reader.c: Don't include assert.h, since we no longer + use assert. + * src/scan-code.l: Likewise. + * src/system.h (assert): Remove, replacing with.... + (aver): New function, taking a bool arg. All uses changed. + * src/tables.c (pack_vector): Ensure that aver arg is bool, + not merely an integer. + +2006-09-15 Bob Rossi <bob@brasko.net> + + * data/Makefile.am (dist_pkgdata_DATA): Add push.c. + * data/c.m4 (YYPUSH): New. + (b4_push_if): New macro. Use it instead of #ifdef YYPUSH. + * src/getargs.c (push_parser): New var. + * src/getargs.h (push_parser): New declaration. + * src/output.c (prepare): Add macro insertion of `push_flag'. + * src/parse-gram.y (PERCENT_PUSH_PARSER): New token. + (prologue_declaration): Parse %push-parser. + * src/scan-gram.l: Scan new PERCENT_PUSH_PARSER token. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Add "Return" and "Now" to + list of removed lines from the traces observed. + (AT_CHECK_CALC_LALR): Added push parser tests. + +2006-09-13 Paul Eggert <eggert@cs.ucla.edu> + + * NEWS: Version 2.3a. + * configure.ac (AC_INIT): Likewise. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Remove + "#define YYSTYPE int" that caused "make maintainer-check" to fail + due to header ordering dependencies. I don't know why the #define + was there. + + Fix glr.cc and lalr1.cc's use of YYDEBUG so that there's zero + runtime cost when YYDEBUG is not defined, and so that some tests + that used to fail now work. Problem and initial suggestion by + Paolo Bonzini. + * data/c++.m4 (b4_parse_param_cons): Omit leading ','. + * data/glr.cc (b4_parser_class_name): + Initialize yycdebug_ only if YYDEBUG. Also, initialize yydebug_. + (debug_level, set_debug_level): Affect yydebug_, not ::yydebug. + (yydebug_) [YYDEBUG]: New member. + (yycdebug_): Now defined only if YYDEBUG. + * data/lalr1.cc (yydebug_, yycdebug_): Now defined only if YYDEBUG. + (YYCDEBUG) [!YYDEBUG]: Don't use yydebug_ and yycdebug_. + (b4_parser_class_name): Initialize yydebug_ and yycdebug_ only + if YYYDEBUG. + (debug_stream, set_debug_stream, debug_level, set_debug_level): + Define only if YYDEBUG. + * tests/calc.at (_AT_DATA_CALC_Y) [!YYDEBUG]: Omit call to + set_debug_level. + * tests/regression.at (_AT_DATA_DANCER_Y) [!YYDEBUG]: Likewise. + * tests/calc.at (AT_CHECK_CALC_GLR_CC): Uncomment calls to + AT_CHECK_CALC_GLR_CC that are working now. + +2006-09-12 Paul Eggert <eggert@cs.ucla.edu> + + * data/glr.cc (YYERROR_VERBOSE, YYTOKEN_TABLE): Remove. + We don't need them in glr.cc, and glr.c defines them. + Defining YYERROR_VERBOSE to 0 here breaks glr.c, since glr.c + assumes that defining it to anything is the same as defining + it to 1. Problem reported by Paolo Bonzini. + +2006-09-12 Paolo Bonzini <bonzini@gnu.org> (tiny change) + + * data/c.m4 (b4_null, b4_case): Define. + * src/output.c (prepare_symbols): Use b4_null. + (user_actions_output): Use b4_case. + +2006-09-11 Paul Eggert <eggert@cs.ucla.edu> + + * data/glr.c (b4_shared_declarations): Put start-header first, + before any #includes that we generate, so that feature-test + macros work. Problem reported by Michael Deutschmann in + <http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00004.html>. + * data/lalr1.cc: Likewise. + * doc/bison.texinfo (Prologue): Document that feature-test macros + should be defined before any Bison declarations. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Put defns + that depend on location.hh after, not before, Bison decls, since + we now include location.hh after the first user prologue. + + * doc/bison.texinfo (Calc++ Parser): Fix memory leak reported by + Sander Brandenburg in + <http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00002.html>. + Also, fix minor white space and comment issues. + (Prologue): Mention that it's better to define feature-test macros + before Bison declarations. Problem reported by Michael Deutschmann. + + * README-cvs: Fix typo: "&" should be "&&". Problem reported + by Jim Meyering. + * m4/.cvsignore: Add argmatch.m4. Remove obstack.m4, strerror_r.m4. + This adjusts to recent gnulib changes. + +2006-09-04 Joel E. Denny <jdenny@ces.clemson.edu> + + Finish implementation of per-type %destructor/%printer. Discussed + starting at + <http://lists.gnu.org/archive/html/bison-patches/2006-02/msg00064.html> + and + <http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00091.html>. + * NEWS (2.3+): Add a description of this feature to the default + %destructor/%printer description. + * doc/bison.texinfo (Freeing Discarded Symbols): Likewise. + * src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set): + Invoke semantic_type_destructor_set or semantic_type_printer_set when a + list node contains a semantic type. + * src/symtab.c, src/symtab.h: Extend with a table that associates + semantic types with their %destructor's and %printer's. + (semantic_type_from_uniqstr, semantic_type_get, + semantic_type_destructor_set, semantic_type_printer_set): New functions + composing the public interface of that table. + (symbol_destructor_get, symbol_destructor_location_get, + symbol_printer_get, symbol_printer_location_get): If there's no + per-symbol %destructor/%printer, look up the per-type before trying + the default. + * tests/actions.at (Per-type %printer and %destructor): New test case. + * tests/input.at (Default %printer and %destructor redeclared): + Extend to check that multiple occurrences of %symbol-default in a + single %destructor/%printer declaration is an error. + (Per-type %printer and %destructor redeclared, Unused values with + per-type %destructor): New test cases. + +2006-09-04 Joel E. Denny <jdenny@ces.clemson.edu> + + Require default %destructor/%printer to be declared using + %symbol-default instead of an empty symbol list, and start working on + new per-type %destructor/%printer. Discussed at + <http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00007.html>. + * NEWS (2.3+): Add %symbol-default to example. + * bison.texinfo (Freeing Discarded Symbols): Likewise. + (Bison Symbols): Add entry for %symbol-default. + * src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): New token. + (generic_symlist, generic_symlist_item): New nonterminals for creating + a list in which each item is a symbol, semantic type, or + %symbol-default. + (grammar_declaration): Use generic_symlist in %destructor and %printer + declarations instead of symbols.1 or an empty list. + (symbol_declaration, precedence_declaration, symbols.1): Update actions + for changes to symbol_list. + * src/reader.c: Update for changes to symbol_list. + * src/scan-code.l: Likewise. + * src/scan-gram.l: Scan new PERCENT_SYMBOL_DEFAULT token. + * src/symlist.c, src/symlist.h: Extend such that a list node may + represent a semantic type or a %symbol-default in addition to just an + ordinary symbol. Add switched functions for setting %destructor's and + %printer's. + * tests/actions.at, tests/input.at: Add %symbol-default to all default + %destructor/%printer declarations. + +2006-08-23 Joel E. Denny <jdenny@ces.clemson.edu> + + Whether the default %destructor/%printer applies to a particular symbol + isn't a question of whether the user *declares* that symbol (in %token, + for example). It's a question of whether the user by any means + *defines* the symbol at all (by simply using a char token, for + example). $end is defined by Bison whereas any other token with token + number 0 is defined by the user. The error token is always defined by + Bison regardless of whether the user declares it with %token, but we + may one day let the user define error as a nonterminal instead. + * NEWS (2.3+): Say "user-defined" instead of "user-declared". + * doc/bison.texinfo (Freeing Discarded Symbols): Likewise, and document + the meaning of "user-defined". + * tests/actions.at (Default %printer and %destructor for user-declared + end token): Rename to... + (Default %printer and %destructor for user-defined end token): ... + this. + + * src/symtab.c (symbol_destructor_get, symbol_printer_get): In the + computation of whether to apply the default, don't maintain a list of + every Bison-defined symbol. Instead, just check for a first character + of '$', which a user symbol cannot have, and check for the error token. + +2006-08-21 Joel E. Denny <jdenny@ces.clemson.edu> + + Don't apply the default %destructor or %printer to the error token, + $undefined, or $accept. This change fits the general rule that the + default %destructor and %printer are only for user-declared symbols, + and it solves several difficulties that are described in the new test + cases listed below. + * src/symtab.c (symbol_destructor_get, symbol_printer_get): Implement. + * tests/actions.at (Default %printer and %destructor are not for error + or $undefined, Default %printer and %destructor are not for $accept): + New test cases. + 2006-08-19 Joel E. Denny <jdenny@ces.clemson.edu> Allow %start after the first rule.