compiler-rt/test/asan/TestCases/strspn_strict.c

   1 // Test strict_str`ing_checks option in strspn function
   2 // RUN: %clang_asan %s -o %t && %run %t 2>&1
   3 // RUN: %env_asan_opts=strict_string_checks=false %run %t 2>&1
   4 // RUN: %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
   5
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 int main(int argc, char **argv) {
  11   size_t size = 100;
  12   char fill = 'o';
  13   char *s1 = (char*)malloc(size);
  14   char *s2 = (char*)malloc(2);
  15   memset(s1, fill, size);
  16   s1[0] = s2[0] = 'z';
  17   s2[1] = '\0';
  18   size_t r = strspn(s1, s2);
  19   // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
  20   // CHECK: READ of size 101
  21   assert(r == 1);
  22   free(s1);
  23   free(s2);
  24   return 0;
  25 }