Thread: Gzip C++ function crashes my program.

Any reason you can think of that this would crash my program:

Code:

 int gzdecompress(char *infilename, char *outfilename)
 {
    gzFile infile = gzopen(infilename, "rb");
    FILE *outfile = fopen(outfilename, "wb");
    if (!infile || !outfile) easymsg("Couldn't open.");

   char buffer[128];
    int num_read = 0;
    while ((num_read = gzread(infile, buffer, sizeof(buffer))) > 0) {
       fwrite(buffer, 1, num_read, outfile);
      }

    gzclose(infile);
    fclose(outfile);
 }

WHILE this works fine:

Code:

int gzCompress(char *infilename, char *outfilename)
{
    FILE *infile = fopen(infilename, "rb");
    gzFile outfile = gzopen(outfilename, "wb");
 if (!infile || !outfile) return -1;
    char inbuffer[128];
    int num_read = 0;
    unsigned long total_read = 0, total_wrote = 0;
   while ((num_read = fread(inbuffer, 1, sizeof(inbuffer), infile)) > 0) {
       total_read += num_read;
       gzwrite(outfile, inbuffer, num_read);
    }
    fclose(infile);
    gzclose(outfile);

}

?