1 files changed, 36 insertions, 0 deletions
diff --git a/lib/asan/lit_tests/deep_stack_uaf.cc b/lib/asan/lit_tests/deep_stack_uaf.cc
new file mode 100644
index 000000000000..7b32798fefcc
--- /dev/null
+++ b/lib/asan/lit_tests/deep_stack_uaf.cc
@@ -0,0 +1,36 @@
+// Check that we can store lots of stack frames if asked to.
+
+// RUN: %clangxx_asan -m64 -O0 %s -o %t 2>&1
+// RUN: ASAN_OPTIONS=malloc_context_size=120:redzone=512 %t 2>&1 | \
+// RUN: %symbolize | FileCheck %s
+
+// RUN: %clangxx_asan -m32 -O0 %s -o %t 2>&1
+// RUN: ASAN_OPTIONS=malloc_context_size=120:redzone=512 %t 2>&1 | \
+// RUN: %symbolize | FileCheck %s
+#include <stdlib.h>
+#include <stdio.h>
+
+template <int depth>
+struct DeepFree {
+  static void free(char *x) {
+    DeepFree<depth - 1>::free(x);
+  }
+};
+
+template<>
+struct DeepFree<0> {
+  static void free(char *x) {
+    ::free(x);
+  }
+};
+
+int main() {
+  char *x = (char*)malloc(10);
+  // deep_free(x);
+  DeepFree<200>::free(x);
+  return x[5];
+  // CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
+  // CHECK: DeepFree<36>
+  // CHECK: DeepFree<98>
+  // CHECK: DeepFree<115>
+}