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[sanitizer] make __tls_get_addr interceptor (more) AS-safe. No good test so far, will keep trying. 

llvm-svn: 200734
This commit is contained in:
Kostya Serebryany 2014-02-04 05:22:00 +00:00
parent 51f135d820
commit f6e085cf89
1 changed files with 3 additions and 2 deletions
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5
compiler-rt/lib/sanitizer_common/sanitizer_tls_get_addr.cc
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@ -60,9 +60,10 @@ static inline void DTLS_Resize(uptr new_size) {
void DTLS_Destroy() {
if (!dtls.dtv_size) return;
UnmapOrDie(dtls.dtv, dtls.dtv_size * sizeof(DTLS::DTV));
uptr s = dtls.dtv_size;
dtls.dtv_size = kDestroyedThread; // Do this before unmap for AS-safety.
UnmapOrDie(dtls.dtv, s * sizeof(DTLS::DTV));
atomic_fetch_sub(&number_of_live_dtls, 1, memory_order_relaxed);
dtls.dtv_size = kDestroyedThread;
}
void DTLS_on_tls_get_addr(void *arg_void, void *res) {