compiler-rt/test/asan/TestCases/printf-2.c

   1 // RUN: %clang_asan -O2 %s -o %t
   2 // We need replace_str=0, intercept_strlen=0 and replace_intrin=0 to avoid
   3 // reporting errors in strlen() and memcpy() called by printf().
   4 // RUN: %env_asan_opts=replace_str=0:intercept_strlen=0:replace_intrin=0:check_printf=1 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
   5 // RUN: %env_asan_opts=replace_str=0:intercept_strlen=0:replace_intrin=0:check_printf=0 %run %t 2>&1 | FileCheck --check-prefix=CHECK-OFF %s
   6 // RUN: %env_asan_opts=replace_str=0:intercept_strlen=0:replace_intrin=0 not %run %t 2>&1 | FileCheck --check-prefix=CHECK-ON %s
   7
   8 // FIXME: printf is not intercepted on Windows yet.
   9 // XFAIL: target={{.*windows-(msvc.*|gnu)}}
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 int main() {
  15   volatile char c = '0';
  16   volatile int x = 12;
  17   volatile float f = 1.239;
  18   volatile char s[] = "34";
  19   char *p = strdup((const char *)s);
  20   free(p);
  21   printf("%c %d %.3f %s\n", c, x, f, p);
  22   return 0;
  23   // Check that %s is sanitized.
  24   // CHECK-ON: heap-use-after-free
  25   // CHECK-ON-NOT: 0 12 1.239 34
  26   // CHECK-OFF: 0 12 1.239
  27 }