--- test.c 2017-08-26 15:33:59.480235200 -0400 +++ test-patched.c 2017-08-23 22:20:22.458331500 -0400 @@ -9,6 +9,10 @@ printf("hello\n"); } +int bad(char *a, char *b) { + strcpy(b, a); +} + /* This is a strcpy test. */ int demo(char *a, char *b) {