1 files changed, 28 insertions, 0 deletions
diff --git a/test/hwasan/TestCases/use-after-free.cc b/test/hwasan/TestCases/use-after-free.cc
new file mode 100644
index 000000000000..a4d3ee89509f
--- /dev/null
+++ b/test/hwasan/TestCases/use-after-free.cc
@@ -0,0 +1,28 @@
+// RUN: %clangxx_hwasan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
+// RUN: %clangxx_hwasan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
+// RUN: %clangxx_hwasan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
+// RUN: %clangxx_hwasan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
+// REQUIRES: stable-runtime
+
+#include <stdlib.h>
+#include <sanitizer/hwasan_interface.h>
+
+int main() {
+  __hwasan_enable_allocator_tagging();
+  char *x = (char*)malloc(10);
+  free(x);
+  __hwasan_disable_allocator_tagging();
+  return x[5];
+  // CHECK: READ of size 1 at
+  // CHECK: #0 {{.*}} in main {{.*}}use-after-free.cc:15
+
+  // CHECK: freed here:
+  // CHECK: #0 {{.*}} in free {{.*}}hwasan_interceptors.cc
+  // CHECK: #1 {{.*}} in main {{.*}}use-after-free.cc:13
+
+  // CHECK: previously allocated here:
+  // CHECK: #0 {{.*}} in __interceptor_malloc {{.*}}hwasan_interceptors.cc
+  // CHECK: #1 {{.*}} in main {{.*}}use-after-free.cc:12
+
+  // CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in main
+}