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[tsan] Fix stack_sync_reuse.cc test on OS X 

The test relies on two variables in different frames to end up being on the same address. For some reason, this isn't true on OS X. This patch adds `__attribute__((aligned(64)))` to the variables, which actually makes the variables occupy the same address. This is still not a guarantee, but it's more likely to work (the test looks very fragile already).

Differential Revision: http://reviews.llvm.org/D14925

llvm-svn: 253981
This commit is contained in:
Kuba Brecka 2015-11-24 13:29:15 +00:00
parent 941d0a756a
commit 6cb7f7a923
1 changed files with 4 additions and 2 deletions
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6
compiler-rt/test/tsan/stack_sync_reuse.cc
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@ -31,7 +31,8 @@ void *Thread(void *x) {
}
void __attribute__((noinline)) foobar() {
long s;
__attribute__((aligned(64))) long s;
addr = &s;
__atomic_store_n(&s, 0, __ATOMIC_RELAXED);
__atomic_store_n(&syncp, &s, __ATOMIC_RELEASE);
@ -40,7 +41,8 @@ void __attribute__((noinline)) foobar() {
}
void __attribute__((noinline)) barfoo() {
long s;
__attribute__((aligned(64))) long s;
if (addr != &s) {
printf("address mismatch addr=%p &s=%p\n", addr, &s);
exit(1);