fortify-headers

standalone fortify-source implementation
git clone git://git.2f30.org/fortify-headers
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test_strncpy_dynamic_write.c (291B)

      1 #include "common.h"
      2 
      3 #include <string.h>
      4 
      5 int main(int argc, char** argv) {
      6   char buffer[8] = {0};
      7   char src[] = {'A', 'B', 'C', 'D', 'E', 'F'};
      8 
      9   strncpy(buffer, src, 5);
     10   puts(buffer);
     11 
     12   CHK_FAIL_START
     13   strncpy(buffer, argv[1], argc);
     14   CHK_FAIL_END
     15 
     16   puts(buffer);
     17   return ret;
     18 }