1 // RUN: %clang_asan -O2 %s -o %t
2 // We need replace_intrin=0 to avoid reporting errors in memcpy.
3 // RUN: %env_asan_opts=replace_intrin=0:check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
4 // RUN: %env_asan_opts=replace_intrin=0:check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
5 // RUN: %env_asan_opts=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>
main()12 int 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