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      1 // Test strict_string_checks option in strchr 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 *s = (char*)malloc(size);
     14   memset(s, fill, size);
     15   char c = 'o';
     16   char* r = strchr(s, c);
     17   // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
     18   // CHECK: READ of size 101
     19   assert(r == s);
     20   free(s);
     21   return 0;
     22 }
     23