test-index-version.con commit fast-import: Introduce --import-marks-if-exists (dded4f1)
   1#include "cache.h"
   2
   3int main(int argc, const char **argv)
   4{
   5        struct cache_header hdr;
   6        int version;
   7
   8        memset(&hdr,0,sizeof(hdr));
   9        if (read(0, &hdr, sizeof(hdr)) != sizeof(hdr))
  10                return 0;
  11        version = ntohl(hdr.hdr_version);
  12        printf("%d\n", version);
  13        return 0;
  14}