diff options
| author | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-12-20 09:35:51 +0000 |
|---|---|---|
| committer | usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-12-20 09:35:51 +0000 |
| commit | 3f084cde2b5306d2928b6d87676c5477fd30e492 (patch) | |
| tree | d60555dc2841955b4ab9f1ec8d725e596c1ef854 /gc.h | |
| parent | 4e0632ad5ddf9f5f94ce38142811ab926d91fa3f (diff) | |
merge revision(s) 38134,38136: [Backport #7468]
* gc.h (SET_MACHINE_STACK_END): add volatile for preventing
harmful optimization.
harmful optimization. [ruby-dev:46665] [Bug #7468]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@38501 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'gc.h')
| -rw-r--r-- | gc.h | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -3,9 +3,9 @@ #define RUBY_GC_H 1 #if defined(__x86_64__) && defined(__GNUC__) -#define SET_MACHINE_STACK_END(p) __asm__("movq\t%%rsp, %0" : "=r" (*(p))) +#define SET_MACHINE_STACK_END(p) __asm__ volatile ("movq\t%%rsp, %0" : "=r" (*(p))) #elif defined(__i386) && defined(__GNUC__) -#define SET_MACHINE_STACK_END(p) __asm__("movl\t%%esp, %0" : "=r" (*(p))) +#define SET_MACHINE_STACK_END(p) __asm__ volatile ("movl\t%%esp, %0" : "=r" (*(p))) #else NOINLINE(void rb_gc_set_stack_end(VALUE **stack_end_p)); #define SET_MACHINE_STACK_END(p) rb_gc_set_stack_end(p) |