tsan: better reports for "double lock of a mutex"

+ fixes crashes due to races on symbolizer, see:
https://code.google.com/p/thread-sanitizer/issues/detail?id=55

llvm-svn: 207204

1 files changed, 2 insertions, 0 deletions

diff --git a/compiler-rt/lib/tsan/rtl/tsan_flags.cc b/compiler-rt/lib/tsan/rtl/tsan_flags.cc
index 2dd9a0c7fe9..143120010a1 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_flags.cc
+++ b/compiler-rt/lib/tsan/rtl/tsan_flags.cc
@@ -41,6 +41,7 @@ static void ParseFlags(Flags *f, const char *env) {
   ParseFlag(env, &f->report_bugs, "report_bugs", "");
   ParseFlag(env, &f->report_thread_leaks, "report_thread_leaks", "");
   ParseFlag(env, &f->report_destroy_locked, "report_destroy_locked", "");
+  ParseFlag(env, &f->report_mutex_bugs, "report_mutex_bugs", "");
   ParseFlag(env, &f->report_signal_unsafe, "report_signal_unsafe", "");
   ParseFlag(env, &f->report_atomic_races, "report_atomic_races", "");
   ParseFlag(env, &f->force_seq_cst_atomics, "force_seq_cst_atomics", "");
@@ -75,6 +76,7 @@ void InitializeFlags(Flags *f, const char *env) {
   f->report_bugs = true;
   f->report_thread_leaks = true;
   f->report_destroy_locked = true;
+  f->report_mutex_bugs = true;
   f->report_signal_unsafe = true;
   f->report_atomic_races = true;
   f->force_seq_cst_atomics = false;