LGTM
================
Comment at: test/asan/TestCases/Darwin/dyld_insert_libraries_reexec.cc:10
@@ +9,3 @@
+#include <stdio.h>
+
+int main() {
----------------
How do you make sure you do not reexec?
Maybe do that explicitly by running with verbosity=1?
http://reviews.llvm.org/D6238