Update compiler-rt to trunk r228651. This enables using Address

Sanitizer and Undefined Behavior Sanitizer with clang 3.6.0.

1 files changed, 6 insertions, 5 deletions

diff --git a/contrib/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc b/contrib/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
index 7b7b27c024f6..e026217ed171 100644
--- a/contrib/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
+++ b/contrib/compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
@@ -111,12 +111,13 @@ void ThreadContext::OnStarted(void *arg) {
     thr->dd_pt = ctx->dd->CreatePhysicalThread();
     thr->dd_lt = ctx->dd->CreateLogicalThread(unique_id);
   }
+  thr->fast_state.SetHistorySize(flags()->history_size);
+  // Commit switch to the new part of the trace.
+  // TraceAddEvent will reset stack0/mset0 in the new part for us.
+  TraceAddEvent(thr, thr->fast_state, EventTypeMop, 0);
+
   thr->fast_synch_epoch = epoch0;
   AcquireImpl(thr, 0, &sync);
-  thr->fast_state.SetHistorySize(flags()->history_size);
-  const uptr trace = (epoch0 / kTracePartSize) % TraceParts();
-  Trace *thr_trace = ThreadTrace(thr->tid);
-  thr_trace->headers[trace].epoch0 = epoch0;
   StatInc(thr, StatSyncAcquire);
   sync.Reset(&thr->clock_cache);
   DPrintf("#%d: ThreadStart epoch=%zu stk_addr=%zx stk_size=%zx "
@@ -329,7 +330,7 @@ void MemoryAccessRange(ThreadState *thr, uptr pc, uptr addr,
       thr->tid, (void*)pc, (void*)addr,
       (int)size, is_write);
 
-#if TSAN_DEBUG
+#if SANITIZER_DEBUG
   if (!IsAppMem(addr)) {
     Printf("Access to non app mem %zx\n", addr);
     DCHECK(IsAppMem(addr));