src/compiler-rt/test/asan/TestCases/strcasestr_strict.c

   1 // Test strict_string_checks option in strcasestr 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 // There's no interceptor for strcasestr on Windows
   7 // XFAIL: win32
   8
   9 #define _GNU_SOURCE
  10 #include <assert.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13
  14 int main(int argc, char **argv) {
  15   size_t size = 100;
  16   char *s1 = (char*)malloc(size);
  17   char *s2 = (char*)malloc(size);
  18   memset(s1, 'o', size);
  19   memset(s2, 'O', size);
  20   s2[size - 1]='\0';
  21   char* r = strcasestr(s1, s2);
  22   // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
  23   // CHECK: READ of size 101
  24   assert(r == s1);
  25   free(s1);
  26   free(s2);
  27   return 0;
  28 }