Change type of a variable for signedness mismatch; ref
@@ -313,7 +313,7 @@ str_index_str_by_char_search(mrb_state *mrb, const char *p, const char *pend, co
/* Preprocessing */
{
- size_t i;
+ mrb_int i;
for (i = 0; i < 1 << CHAR_BIT; i ++) {
qstable[i] = slen;
