1 files changed, 21 insertions, 0 deletions
diff --git a/lib/asan/lit_tests/TestCases/invalid-free.cc b/lib/asan/lit_tests/TestCases/invalid-free.cc
new file mode 100644
index 000000000000..f940b501279a
--- /dev/null
+++ b/lib/asan/lit_tests/TestCases/invalid-free.cc
@@ -0,0 +1,21 @@
+// RUN: %clangxx_asan -O0 %s -o %t
+// RUN: not %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=MALLOC-CTX
+
+// Also works if no malloc context is available.
+// RUN: ASAN_OPTIONS=malloc_context_size=0:fast_unwind_on_malloc=0 not %t 2>&1 | FileCheck %s
+// RUN: ASAN_OPTIONS=malloc_context_size=0:fast_unwind_on_malloc=1 not %t 2>&1 | FileCheck %s
+
+#include <stdlib.h>
+#include <string.h>
+int main(int argc, char **argv) {
+  char *x = (char*)malloc(10 * sizeof(char));
+  memset(x, 0, 10);
+  int res = x[argc];
+  free(x + 5);  // BOOM
+  // CHECK: AddressSanitizer: attempting free on address{{.*}}in thread T0
+  // CHECK: invalid-free.cc:[[@LINE-2]]
+  // CHECK: is located 5 bytes inside of 10-byte region
+  // CHECK: allocated by thread T0 here:
+  // MALLOC-CTX: invalid-free.cc:[[@LINE-8]]
+  return res;
+}