vendor/compiler-rt/compiler-rt-r224034

1 files changed, 43 insertions, 0 deletions

diff --git a/test/asan/TestCases/uar_and_exceptions.cc b/test/asan/TestCases/uar_and_exceptions.cc
new file mode 100644
index 0000000000000..0bfe297295553
--- /dev/null
+++ b/test/asan/TestCases/uar_and_exceptions.cc
@@ -0,0 +1,43 @@
+// Test that use-after-return works with exceptions.
+// export ASAN_OPTIONS=detect_stack_use_after_return=1
+// RUN: %clangxx_asan  -O0 %s -o %t && %run %t
+
+// Clang doesn't support exceptions on Windows yet.
+// XFAIL: win32
+
+#include <stdio.h>
+
+volatile char *g;
+
+#ifndef FRAME_SIZE
+# define FRAME_SIZE 100
+#endif
+
+#ifndef NUM_ITER
+# define NUM_ITER 4000
+#endif
+
+#ifndef DO_THROW
+# define DO_THROW 1
+#endif
+
+void Func(int depth) {
+  char frame[FRAME_SIZE];
+  g = &frame[0];
+  if (depth)
+    Func(depth - 1);
+  else if (DO_THROW)
+    throw 1;
+}
+
+int main(int argc, char **argv) {
+  for (int i = 0; i < NUM_ITER; i++) {
+    try {
+      Func(argc * 100);
+    } catch(...) {
+    }
+    if ((i % (NUM_ITER / 10)) == 0)
+      fprintf(stderr, "done [%d]\n", i);
+  }
+  return 0;
+}