1 files changed, 35 insertions, 0 deletions
diff --git a/lib/asan/lit_tests/TestCases/Linux/unpoison_tls.cc b/lib/asan/lit_tests/TestCases/Linux/unpoison_tls.cc
new file mode 100644
index 000000000000..d67c4f954e43
--- /dev/null
+++ b/lib/asan/lit_tests/TestCases/Linux/unpoison_tls.cc
@@ -0,0 +1,35 @@
+// Test that TLS is unpoisoned on thread death.
+// REQUIRES: x86_64-supported-target,i386-supported-target
+
+// RUN: %clangxx_asan -O1 %s -o %t && %t 2>&1
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+
+#include <sanitizer/asan_interface.h>
+
+__thread int64_t tls_var[2];
+
+volatile int64_t *p_tls_var;
+
+void *first(void *arg) {
+  ASAN_POISON_MEMORY_REGION(&tls_var, sizeof(tls_var));
+  p_tls_var = tls_var;
+  return 0;
+}
+
+void *second(void *arg) {
+  assert(tls_var == p_tls_var);
+  *p_tls_var = 1;
+  return 0;
+}
+
+int main(int argc, char *argv[]) {
+  pthread_t p;
+  assert(0 == pthread_create(&p, 0, first, 0));
+  assert(0 == pthread_join(p, 0));
+  assert(0 == pthread_create(&p, 0, second, 0));
+  assert(0 == pthread_join(p, 0));
+  return 0;
+}