1// RUN: %clang_asan -O2 %s -o %t
2// We need replace_intrin=0 to avoid reporting errors in memcpy.
3// RUN: env ASAN_OPTIONS=replace_intrin=0:check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
4// RUN: env ASAN_OPTIONS=replace_intrin=0:check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
5// RUN: env ASAN_OPTIONS=replace_intrin=0 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
6
7// FIXME: printf is not intercepted on Windows yet.
8// XFAIL: win32
9
10#include <stdio.h>
11#include <string.h>
12int main() {
13  volatile char c = '0';
14  volatile int x = 12;
15  volatile float f = 1.239;
16  volatile char s[] = "34";
17  volatile char fmt[2];
18  memcpy((char *)fmt, "%c %d %f %s\n", sizeof(fmt));
19  printf((char *)fmt, c, x, f, s);
20  return 0;
21  // Check that format string is sanitized.
22  // CHECK-ON: stack-buffer-overflow
23  // CHECK-ON-NOT: 0 12 1.239 34
24  // CHECK-OFF: 0
25}
26