1 // RUN: %clang_asan -O2 %s -o %t 2 // RUN: env ASAN_OPTIONS=check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s 3 // RUN: env ASAN_OPTIONS=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: win32 8 9 #include <stdio.h> 10 int main() { 11 volatile char c = '0'; 12 volatile int x = 12; 13 volatile float f = 1.239; 14 volatile char s[] = "34"; 15 volatile int n[1]; 16 printf("%c %d %.3f %s%n\n", c, x, f, s, &n[1]); 17 return 0; 18 // Check that %n is sanitized. 19 // CHECK-ON: stack-buffer-overflow 20 // CHECK-ON-NOT: 0 12 1.239 34 21 // CHECK-OFF: 0 12 1.239 34 22 } 23
