[sanitizer] fix build warnings; add an output test for the deadlock detecor

llvm-svn: 204035

1 files changed, 2 insertions, 1 deletions

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_deadlock_detector_interface.h b/compiler-rt/lib/sanitizer_common/sanitizer_deadlock_detector_interface.h
index 51e55f4a8f5..5d1ecf42830 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_deadlock_detector_interface.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_deadlock_detector_interface.h
@@ -47,13 +47,14 @@ struct DDMutex {
 };
 
 struct DDReport {
+  enum { kMaxLoopSize = 16 };
   int n;  // number of entries in loop
   struct {
     u64 thr_ctx;   // user thread context
     u64 mtx_ctx0;  // user mutex context, start of the edge
     u64 mtx_ctx1;  // user mutex context, end of the edge
     u32 stk;       // stack id for the edge
-  } loop[16];
+  } loop[kMaxLoopSize];
 };
 
 struct DDCallback {