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configure.in: do not use a variable for longjmp

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* configure.in (ac_cv_func___builtin_setjmp): gcc 4.9 disallows a
  variable as the second argument of __builtin_longjmp().
  [ruby-core:61800] [Bug #9692]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-04-02 08:43:18 +00:00
parent 1f20820054
commit 4ad0071dc8
2 changed files with 13 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Wed Apr 2 17:43:17 2014 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in (ac_cv_func___builtin_setjmp): gcc 4.9 disallows a
variable as the second argument of __builtin_longjmp().
[ruby-core:61800] [Bug #9692]
Wed Apr 2 15:12:18 2014 SHIBATA Hiroshi <shibata.hiroshi@gmail.com> Wed Apr 2 15:12:18 2014 SHIBATA Hiroshi <shibata.hiroshi@gmail.com>
* common.mk: Use redmine-2.x url for DeveloperHowto wiki. * common.mk: Use redmine-2.x url for DeveloperHowto wiki.

9
configure.in
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@ -2076,8 +2076,13 @@ AC_CACHE_CHECK(for sigsetjmp as a macro or function, ac_cv_func_sigsetjmp,
AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp, AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp,
[AC_TRY_LINK([@%:@include <setjmp.h> [AC_TRY_LINK([@%:@include <setjmp.h>
jmp_buf jb; void t(v) int v; {__builtin_longjmp(jb, v);}], @%:@include <stdio.h>
[__builtin_setjmp(jb);], jmp_buf jb;
void t(void) {__builtin_longjmp(jb, 1);}],
[
void (*volatile f)(void) = t;
if (!__builtin_setjmp(jb)) printf("%d\n", f != 0);
],
[ac_cv_func___builtin_setjmp=yes], [ac_cv_func___builtin_setjmp=yes],
[ac_cv_func___builtin_setjmp=no]) [ac_cv_func___builtin_setjmp=no])
]) ])