add strrchr -D_FORTIFY_SOURCE=2 test.

Change-Id: I1b95bb0086ae9f2f506f3cc90cee834c0ce3b1d8
diff --git a/tests/fortify2_test.cpp b/tests/fortify2_test.cpp
index f1a2eb9..2e905c5 100644
--- a/tests/fortify2_test.cpp
+++ b/tests/fortify2_test.cpp
@@ -44,6 +44,17 @@
               testing::KilledBySignal(SIGSEGV), "");
 }
 
+#if __BIONIC__
+TEST(Fortify2_DeathTest, strrchr2) {
+  ::testing::FLAGS_gtest_death_test_style = "threadsafe";
+  foo myfoo;
+  memcpy(myfoo.a, "0123456789", 10);
+  memcpy(myfoo.b, "01234", 6);
+  ASSERT_EXIT(printf("%s", strrchr(myfoo.a, 'a')),
+              testing::KilledBySignal(SIGSEGV), "");
+}
+#endif
+
 /***********************************************************/
 /* TESTS BELOW HERE DUPLICATE TESTS FROM fortify1_test.cpp */
 /***********************************************************/