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Merge branch 'maint'

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* origin/maint:
  NEWS: warnings with clang
  warnings: avoid warnings from clang
  tests: no longer disable -O compiler options
  yacc.c: initialize yylval in pure-parser mode
  skeletons: style changes
  lalr1.cc: document exception safety
  lalr1.cc: check exception safety of error handling
  lalr1.cc: check (and fix) %printer exception safety
  lalr1.cc: check (and fix) %initial-action exception safety
  lalr1.cc: fix exception safety
  lalr1.cc: check exception safety.
  lalr1.cc: indentation fixes.
  lalr1.cc: don't leave macros define to nothing
  tests: minor improvements
  tests: use $PERL instead of perl
  build: look for Perl in configure.
  tests: fix sed portability issues
  tests: diff -u is not portable

Conflicts:
	data/c.m4
	data/glr.c
	data/lalr1.cc
	data/yacc.c
	doc/Makefile.am
	tests/atlocal.in
	tests/calc.at
This commit is contained in:
Akim Demaille
2012-10-10 17:31:25 +02:00
parent 2b45240d6c c12c4c507d
commit 23d13411c8
18 changed files with 388 additions and 71 deletions
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28
NEWS
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@@ -240,7 +240,7 @@ GNU Bison NEWS
** Bug fixes
Bugs in the test suite have been fixed.
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.
@@ -275,6 +275,32 @@ GNU Bison NEWS
will use YY_CALC_LIB_PARSE_H_INCLUDED as guard.
** Exception safety (lalr1.cc)
The parse function now catches exceptions, uses the %destructors to
release memory (the lookahead symbol and the symbols pushed on the stack)
before rethrowing the exception.
This feature is somewhat experimental. User feedback would be
appreciated.
** 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