Use `snprintf` instead of `memcpy` in `mrbc.c`.
MODIFY
mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c
mrbgems/mruby-bin-mrbc/tools/mrbc/mrbc.c
@@ -53,19 +53,13 @@ static char *
get_outfilename(mrb_state *mrb, char *infile, const char *ext)
{
size_t infilelen;
- size_t extlen;
+ size_t flen;
char *outfile;
- char *p;
infilelen = strlen(infile);
- extlen = strlen(ext);
- outfile = (char*)mrb_malloc(mrb, infilelen + extlen + 1);
- memcpy(outfile, infile, infilelen + 1);
- if (*ext) {
- if ((p = strrchr(outfile, '.')) == NULL)
- p = outfile + infilelen;
- memcpy(p, ext, extlen + 1);
- }
+ flen = infilelen + strlen(ext) + 1;
+ outfile = (char*)mrb_malloc(mrb, flen);
+ snprintf(outfile, flen, "%s%s", infile, ext);
return outfile;
}

Use `snprintf` instead of `memcpy` in `mrbc.c`.