Fix the bug caused by `to_a` returning a frozen array.
Reported by
MODIFY
src/array.c
src/array.c
@@ -1078,11 +1078,11 @@ mrb_ary_rindex_m(mrb_state *mrb, mrb_value self)
MRB_API mrb_value
mrb_ary_splat(mrb_state *mrb, mrb_value v)
{
- mrb_value a;
+ mrb_value ary;
+ struct RArray *a;
if (mrb_array_p(v)) {
- struct RArray *a = mrb_ary_ptr(v);
- a = ary_dup(mrb, a);
+ a = ary_dup(mrb, mrb_ary_ptr(v));
return mrb_obj_value(a);
}
@@ -1090,12 +1090,17 @@ mrb_ary_splat(mrb_state *mrb, mrb_value v)
return mrb_ary_new_from_values(mrb, 1, &v);
}
- a = mrb_funcall(mrb, v, "to_a", 0);
- if (mrb_nil_p(a)) {
+ ary = mrb_funcall(mrb, v, "to_a", 0);
+ if (mrb_nil_p(ary)) {
return mrb_ary_new_from_values(mrb, 1, &v);
}
- mrb_ensure_array_type(mrb, a);
- return a;
+ mrb_ensure_array_type(mrb, ary);
+ a = mrb_ary_ptr(ary);
+ if (mrb_frozen_p(a)) {
+ a = ary_dup(mrb, a);
+ return mrb_obj_value(a);
+ }
+ return ary;
}
static mrb_value

Fix the bug caused by `to_a` returning a frozen array.

Reported by @shuujii.