1 // RUN: %clang_asan -O2 %s -o %t
2 // RUN: %env_asan_opts=check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
3 // RUN: not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
4
5 // FIXME: sprintf is not intercepted on Windows yet.
6 // XFAIL: win32
7
8 #include <stdio.h>
main()9 int main() {
10 volatile char c = '0';
11 volatile int x = 12;
12 volatile float f = 1.239;
13 volatile char s[] = "34";
14 volatile char buf[2];
15 fputs("before sprintf\n", stderr);
16 sprintf((char *)buf, "%c %d %.3f %s\n", c, x, f, s);
17 fputs("after sprintf", stderr);
18 fputs((const char *)buf, stderr);
19 return 0;
20 // Check that size of output buffer is sanitized.
21 // CHECK-ON: before sprintf
22 // CHECK-ON-NOT: after sprintf
23 // CHECK-ON: stack-buffer-overflow
24 // CHECK-ON-NOT: 0 12 1.239 34
25 }
26