test/asan/TestCases/printf-1.c

   1 // RUN: %clang_asan -O2 %s -o %t
   2 // RUN: ASAN_OPTIONS=check_printf=1 %t 2>&1 | FileCheck %s
   3 // RUN: ASAN_OPTIONS=check_printf=0 %t 2>&1 | FileCheck %s
   4 // RUN: %t 2>&1 | FileCheck %s
   5
   6 #include <stdio.h>
   7 int main() {
   8   volatile char c = '0';
   9   volatile int x = 12;
  10   volatile float f = 1.239;
  11   volatile char s[] = "34";
  12   // Check that printf works fine under Asan.
  13   printf("%c %d %.3f %s\n", c, x, f, s);
  14   // CHECK: 0 12 1.239 34
  15   // Check that snprintf works fine under Asan.
  16   char buf[4];
  17   snprintf(buf, 1000, "qwe");
  18   printf("%s\n", buf);
  19   // CHECK: qwe
  20   return 0;
  21 }