tsan: add mutexsets to reports
With this change reports say what mutexes the threads hold around the racy memory accesses.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@169493 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/tsan/rtl/tsan_rtl.cc b/lib/tsan/rtl/tsan_rtl.cc
index 17e7bd5..3732bdd 100644
--- a/lib/tsan/rtl/tsan_rtl.cc
+++ b/lib/tsan/rtl/tsan_rtl.cc
@@ -291,6 +291,7 @@
   TraceHeader *hdr = &thr->trace.headers[trace];
   hdr->epoch0 = thr->fast_state.epoch();
   hdr->stack0.ObtainCurrent(thr, 0);
+  hdr->mset0 = thr->mset;
   thr->nomalloc--;
 }