fortify-headers

standalone fortify-source implementation
git clone git://git.2f30.org/fortify-headers
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test_fread_overwrite_dynamic.c (293B)

      1 #include "common.h"
      2 
      3 #include <assert.h>
      4 #include <stdio.h>
      5 
      6 int main(int argc, char** argv) {
      7   char buffer[12] = {0};
      8 
      9   assert((sizeof(buffer) - 2) * argc > sizeof(*buffer));
     10 
     11   CHK_FAIL_START
     12   fread(buffer, sizeof(buffer) - 2, argc, NULL);
     13   CHK_FAIL_END
     14 
     15   puts(buffer);
     16   return ret;
     17 }