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: %env_asan_opts=check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
4 // RUN: not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
5
6 // FIXME: printf is not intercepted on Windows yet.
7 // XFAIL: windows-msvc
8
9 // New Bionic rejects %n
10 // https://android.googlesource.com/platform/bionic/+/41398d03b7e8e0dfb951660ae713e682e9fc0336
11 // UNSUPPORTED: android
12
13 #include <stdio.h>
main()14 int main() {
15 #ifdef _MSC_VER
16 // FIXME: The test raises a dialog even though it's XFAILd.
17 return 42;
18 #endif
19 volatile char c = '0';
20 volatile int x = 12;
21 volatile float f = 1.239;
22 volatile char s[] = "34";
23 volatile int n[1];
24 printf("%c %d %.3f %s%n\n", c, x, f, s, &n[1]);
25 return 0;
26 // Check that %n is sanitized.
27 // CHECK-ON: stack-buffer-overflow
28 // CHECK-ON-NOT: 0 12 1.239 34
29 // CHECK-OFF: 0 12 1.239 34
30 }
31