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author | Ivan Maidanski <ivmai@mail.ru> | 2012-08-01 09:42:36 +0400 |
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committer | Ivan Maidanski <ivmai@mail.ru> | 2012-08-01 09:42:36 +0400 |
commit | d6acbda22a4f5bdf4340edacdccf01cc7e38aea8 (patch) | |
tree | f2ef982c198353d4d602f3b6ad098f3f6e11e5dd /tools | |
parent | 6605aebacb02bcce094db7a0ce07d8731b907955 (diff) | |
download | bdwgc-d6acbda22a4f5bdf4340edacdccf01cc7e38aea8.tar.gz |
Fix all address-of-dummy operations by adding volatile
* alloc.c (min_bytes_allocd, GC_stopped_mark): Use volatile for
'dummy' local variable (used to get 'sp' value) to prevent any
harmful optimizations (e.g., some Mac OS X clang releases might turn
a conditional expression that uses 'dummy' address into a constant).
* dyn_load.c (GC_cond_add_roots): Likewise.
* mach_dep.c (GC_with_callee_saves_pushed): Likewise.
* misc.c (GC_clear_stack_inner, GC_init, GC_call_with_stack_base):
Likewise.
* os_dep.c (GC_get_stack_base, GC_get_main_stack_base,
async_set_pht_entry_from_index): Likewise.
* pthread_stop_world.c (nacl_pre_syscall_hook,
__nacl_suspend_thread_if_needed): Likewise.
* pthread_support.c (GC_thr_init): Likewise.
* ptr_chck.c (GC_on_stack): Likewise.
* tools/setjmp_t.c (main): Likewise.
* win32_threads.c (GC_push_stack_for): Likewise.
* dyn_load.c (dummy): Change variable type from char to int.
* include/private/gcconfig.h: Update comment about GC_stackbottom
initialization.
* os_dep.c (GC_get_stack_base): Remove 'sp' local variable.
* os_dep.c (GC_get_main_stack_base): Define and use volatile 'dummy'
variable (instead of 'result') to get 'sp' value (revert part of
commit bddc75f).
* os_dep.c (GC_get_stack_base): Add missing cast of 'dummy' address
(only if NEED_FIND_LIMIT).
* pthread_stop_world.c (GC_suspend_handler_inner): Define and use
volatile 'dummy' variable (instead of 'me') to get 'sp' value (revert
part of commit 31fc0f6).
* pthread_stop_world.c (nacl_pre_syscall_hook,
__nacl_suspend_thread_if_needed): Rename 'local_dummy' to 'dummy'
local variable.
Diffstat (limited to 'tools')
-rw-r--r-- | tools/setjmp_t.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/setjmp_t.c b/tools/setjmp_t.c index fc54844a..b3bc2a29 100644 --- a/tools/setjmp_t.c +++ b/tools/setjmp_t.c @@ -69,7 +69,7 @@ int * nested_sp(void) int main(void) { - int dummy; + volatile int dummy; long ps = GETPAGESIZE(); jmp_buf b; register int x = (int)strlen("a"); /* 1, slightly disguised */ |