parse.y: `mrb_int_read()` returns `mrb_int` not `unsigned long`.
Also, now too big capture group index just gives `nil`, not error.
MODIFY
mrbgems/mruby-compiler/core/parse.y
mrbgems/mruby-compiler/core/parse.y
@@ -6256,10 +6256,10 @@ parser_yylex(parser_state *p)
if (last_state == EXPR_FNAME) goto gvar;
tokfix(p);
{
- unsigned long n = mrb_int_read(tok(p), NULL, NULL);
- if (n > INT_MAX) {
- yyerror(p, "capture group index must be <= " MRB_STRINGIZE(INT_MAX));
- return 0;
+ mrb_int n = mrb_int_read(tok(p), NULL, NULL);
+ if (n > INT32_MAX) {
+ yywarning(p, "capture group index too big; always nil");
+ return keyword_nil;
}
pylval.nd = new_nth_ref(p, (int)n);
}

parse.y: `mrb_int_read()` returns `mrb_int` not `unsigned long`.

Also, now too big capture group index just gives `nil`, not error.