Mark scribble.cc as unsupported on iOS.
// RUN: env MallocScribble=1 MallocPreScribble=1 %run %t 2>&1 | FileCheck --check-prefix=CHECK-SCRIBBLE %s
// RUN: %env_asan_opts=max_free_fill_size=4096 %run %t 2>&1 | FileCheck --check-prefix=CHECK-SCRIBBLE %s
+// UNSUPPORTED: ios
+
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
