tsan: fix a crash

Fixes crash reported in:
https://bugs.chromium.org/p/v8/issues/detail?id=4995

The problem is that we don't have a processor in a free interceptor
during thread exit.

The crash was introduced by introduction of Processors.
However, previously we silently leaked memory which wasn't any better.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@268782 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 39 insertions, 0 deletions

diff --git a/test/tsan/pthread_key.cc b/test/tsan/pthread_key.cc
new file mode 100644
index 000000000..798caa4ab
--- /dev/null
+++ b/test/tsan/pthread_key.cc
@@ -0,0 +1,39 @@
+// RUN: %clangxx_tsan -O1 %s -DBUILD_SO -fPIC -shared -o %t-so.so
+// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+
+// Extracted from:
+// https://bugs.chromium.org/p/v8/issues/detail?id=4995
+
+#include "test.h"
+
+void* thr(void* arg) {
+  const int N = 32;
+  pthread_key_t keys_[N];
+  for (size_t i = 0; i < N; ++i) {
+    int err = pthread_key_create(&keys_[i], 0);
+    if (err) {
+      fprintf(stderr, "pthread_key_create failed with %d\n", err);
+      exit(1);
+    }
+  }
+  for (size_t i = 0; i < N; i++)
+    pthread_setspecific(keys_[i], (void*)(long)i);
+  for (size_t i = 0; i < N; i++)
+    pthread_key_delete(keys_[i]);
+  return 0;
+}
+
+int main() {
+  for (int i = 0; i < 10; i++) {
+    pthread_t th;
+    pthread_create(&th, 0, thr, 0);
+    pthread_join(th, 0);
+  }
+  pthread_t th[2];
+  pthread_create(&th[0], 0, thr, 0);
+  pthread_create(&th[1], 0, thr, 0);
+  pthread_join(th[0], 0);
+  pthread_join(th[1], 0);
+  fprintf(stderr, "DONE\n");
+  // CHECK: DONE
+}