X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ad6b775fc541a0151260e5284f7faec36de2a0d7..0ac1584946d1c00d687f53b012ef28d6397602ce:/NEWS?ds=sidebyside diff --git a/NEWS b/NEWS index 52a5c805..87d4173e 100644 --- a/NEWS +++ b/NEWS @@ -1,16 +1,115 @@ GNU Bison NEWS -* Noteworthy changes in release ?.? (????-??-??) [?] +* Noteworthy changes in release 2.6.4 (2012-10-23) [stable] + Bison 2.6.3's --version was incorrect. This release fixes this issue. -* Noteworthy changes in release 2.5.91 (2012-07-18) [beta] +* Noteworthy changes in release 2.6.3 (2012-10-22) [stable] + +** Bug fixes + + Bugs and portability issues in the test suite have been fixed. + + Some errors in translations have been addressed, and --help now directs + users to the appropriate place to report them. + + Stray Info files shipped by accident are removed. + + Incorrect definitions of YY_, issued by yacc.c when no parser header is + generated, are removed. + + All the generated headers are self-contained. + +** Header guards (yacc.c, glr.c, glr.cc) + + In order to avoid collisions, the header guards are now + YY___INCLUDED, instead of merely _. + For instance the header generated from + + %define api.prefix "calc" + %defines "lib/parse.h" + + will use YY_CALC_LIB_PARSE_H_INCLUDED as guard. + +** Fix compiler warnings in the generated parser (yacc.c, glr.c) + + The compilation of pure parsers (%define api.pure) can trigger GCC + warnings such as: + + input.c: In function 'yyparse': + input.c:1503:12: warning: 'yylval' may be used uninitialized in this + function [-Wmaybe-uninitialized] + *++yyvsp = yylval; + ^ + + This is now fixed; pragmas to avoid these warnings are no longer needed. + + Warnings from clang ("equality comparison with extraneous parentheses" and + "function declared 'noreturn' should not return") have also been + addressed. + +* Noteworthy changes in release 2.6.2 (2012-08-03) [stable] + +** Bug fixes + + Buffer overruns, complaints from Flex, and portability issues in the test + suite have been fixed. + +** Spaces in %lex- and %parse-param (lalr1.cc, glr.cc) + + Trailing end-of-lines in %parse-param or %lex-param would result in + invalid C++. This is fixed. + +** Spurious spaces and end-of-lines + + The generated files no longer end (nor start) with empty lines. + +* Noteworthy changes in release 2.6.1 (2012-07-30) [stable] + + Bison no longer executes user-specified M4 code when processing a grammar. + +** Future Changes + + In addition to the removal of the features announced in Bison 2.6, the + next major release will remove the "Temporary hack for adding a semicolon + to the user action", as announced in the release 2.5. Instead of: + + exp: exp "+" exp { $$ = $1 + $3 }; + + write: + + exp: exp "+" exp { $$ = $1 + $3; }; + +** Bug fixes + +*** Type names are now properly escaped. + +*** glr.cc: set_debug_level and debug_level work as expected. + +*** Stray @ or $ in actions + + While Bison used to warn about stray $ or @ in action rules, it did not + for other actions such as printers, destructors, or initial actions. It + now does. + +** Type names in actions + + For consistency with rule actions, it is now possible to qualify $$ by a + type-name in destructors, printers, and initial actions. For instance: + + %printer { fprintf (yyo, "(%d, %f)", $$, $$); } <*> <>; + + will display two values for each typed and untyped symbol (provided + that YYSTYPE has both "ival" and "fval" fields). + +* Noteworthy changes in release 2.6 (2012-07-19) [stable] ** Future Changes The next major release of Bison will drop support for the following deprecated features. Please report disagreements to bug-bison@gnu.org. -*** K&C parsers +*** K&R C parsers Support for generating parsers in K&R C will be removed. Parsers generated for C support ISO C90, and are tested with ISO C99 and ISO C11 @@ -1806,7 +1905,7 @@ along with this program. If not, see . LocalWords: namespaces strerror const autoconfiguration Dconst Autoconf's FDL LocalWords: Automake TMPDIR LESSEQ ylwrap endif yydebug YYTOKEN YYLSP ival hh LocalWords: extern YYTOKENTYPE TOKENTYPE yytokentype tokentype STYPE lval pdf - LocalWords: lang yyoutput dvi html ps POSIX lvalp llocp + LocalWords: lang yyoutput dvi html ps POSIX lvalp llocp calc yyo fval Local Variables: mode: outline