Import compiler-rt trunk r224034.vendor/compiler-rt/compiler-rt-r224034

https://llvm.org/svn/llvm-project/compiler-rt/trunk@224034

1 files changed, 36 insertions, 0 deletions

diff --git a/test/asan/TestCases/deep_stack_uaf.cc b/test/asan/TestCases/deep_stack_uaf.cc
new file mode 100644
index 000000000000..3e88d697fcef
--- /dev/null
+++ b/test/asan/TestCases/deep_stack_uaf.cc
@@ -0,0 +1,36 @@
+// Check that we can store lots of stack frames if asked to.
+
+// RUN: %clangxx_asan -O0 %s -o %t 2>&1
+// RUN: env ASAN_OPTIONS=malloc_context_size=120:redzone=512 not %run %t 2>&1 | FileCheck %s
+// XFAIL: arm-linux-gnueabi
+// XFAIL: armv7l-unknown-linux-gnueabihf
+#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}}
+  // The libcxxrt demangling procedure on FreeBSD 9.2 incorrectly appends
+  // extra 'E' characters to the end of template arguments; see:
+  // https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192115
+  // CHECK: {{DeepFree<36>|DeepFree<36E>}}
+  // CHECK: {{DeepFree<98>|DeepFree<98E>}}
+  // CHECK: {{DeepFree<115>|DeepFree<115E>}}
+}