diff --git a/compiler-rt/lib/tsan/rtl/tsan_platform_mac.cpp b/compiler-rt/lib/tsan/rtl/tsan_platform_mac.cpp
--- a/compiler-rt/lib/tsan/rtl/tsan_platform_mac.cpp
+++ b/compiler-rt/lib/tsan/rtl/tsan_platform_mac.cpp
@@ -219,11 +219,10 @@
       ThreadStart(thr, tid, GetTid(), ThreadType::Worker);
     }
   } else if (event == PTHREAD_INTROSPECTION_THREAD_TERMINATE) {
-    if (thread == pthread_self()) {
-      ThreadState *thr = cur_thread();
-      if (thr->tctx) {
-        DestroyThreadState();
-      }
+    CHECK(thread == pthread_self());
+    ThreadState *thr = cur_thread();
+    if (thr->tctx) {
+      DestroyThreadState();
     }
   }