diff options
| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-04-04 02:37:27 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-04-04 02:37:27 +0000 |
| commit | 9dd0113023283583441fc4f3cc571c275ec5ec0b (patch) | |
| tree | 332672ae3642b77a9831416293dbfbe173c34ed6 /configure.in | |
| parent | d41af17d373c779757864eb20a233a50f2b82673 (diff) | |
configure.in: get rid of clang fatal error
* configure.in (ac_cv_func___builtin_setjmp): get rid of a bug in
clang 3.3 and 3.4, which __builtin_setjmp() causes fatal error
in backend, linker error, or segmentation fault.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45515 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/configure.in b/configure.in index a7d3c75a7d..2094f7b4a7 100644 --- a/configure.in +++ b/configure.in @@ -2080,15 +2080,16 @@ fi AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp, [ ac_cv_func___builtin_setjmp=no - for cast in "" "(void *)"; do + for cast in "" "(void **)"; do RUBY_WERROR_FLAG( [AC_TRY_LINK([@%:@include <setjmp.h> @%:@include <stdio.h> jmp_buf jb; - void t(void) {__builtin_longjmp($cast jb, 1);}], + void t(void) {__builtin_longjmp($cast jb, 1);} + int jump(void) {(void)(__builtin_setjmp($cast jb) ? 1 : 0); return 0;}], [ void (*volatile f)(void) = t; - if (!__builtin_setjmp($cast jb)) printf("%d\n", f != 0); + if (!jump()) printf("%d\n", f != 0); ], [ac_cv_func___builtin_setjmp="yes with cast ($cast)"]) ]) |