diff options
| author | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-05-28 04:24:54 +0000 |
|---|---|---|
| committer | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-05-28 04:24:54 +0000 |
| commit | 3c508c9d9b1fed041c0efae7d996056efdf2fd50 (patch) | |
| tree | 68304e6df015b153ad552910c691bf5234d116a3 /configure.in | |
| parent | 22bc771fc1605e0414a4d8cda4c3a8b82cb812f4 (diff) | |
merge revision(s) 45716: [Backport #9665]
* configure.in (rb_cv_func___builtin_unreachable): try with an
external variable not only by a warning, which might not be
shown due to the optimization. [ruby-core:61647] [Bug #9665]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@46201 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/configure.in b/configure.in index f49a34c981..402919d174 100644 --- a/configure.in +++ b/configure.in @@ -1371,8 +1371,8 @@ if test "$GCC" = yes; then AC_CACHE_CHECK(for __builtin_unreachable, rb_cv_func___builtin_unreachable, [RUBY_WERROR_FLAG( - [AC_TRY_LINK([@%:@include <stdlib.h>], - [exit(0); __builtin_unreachable();], + [AC_TRY_LINK([volatile int zero;], + [if (zero) __builtin_unreachable();], [rb_cv_func___builtin_unreachable=yes], [rb_cv_func___builtin_unreachable=no]) ]) |