Check struct-array pointer before accessing; fix
MODIFY
mrbgems/mruby-struct/src/struct.c
mrbgems/mruby-struct/src/struct.c
@@ -118,7 +118,10 @@ static mrb_value
mrb_struct_ref(mrb_state *mrb, mrb_value obj)
{
mrb_int i = mrb_fixnum(mrb_proc_cfunc_env_get(mrb, 0));
- return RSTRUCT_PTR(obj)[i];
+ mrb_value *ptr = RSTRUCT_PTR(obj);
+
+ if (!ptr) return mrb_nil_value();
+ return ptr[i];
}
static mrb_sym
@@ -144,10 +147,17 @@ static mrb_value
mrb_struct_set_m(mrb_state *mrb, mrb_value obj)
{
mrb_int i = mrb_fixnum(mrb_proc_cfunc_env_get(mrb, 0));
+ mrb_value *ptr = RSTRUCT_PTR(obj);
mrb_value val;
mrb_get_args(mrb, "o", &val);
mrb_struct_modify(mrb, obj);
- return RSTRUCT_PTR(obj)[i] = val;
+ if (i >= RSTRUCT_LEN(obj)) {
+ mrb_ary_set(mrb, obj, i, val);
+ }
+ else {
+ ptr[i] = val;
+ }
+ return val;
}
static mrb_bool

Check struct-array pointer before accessing; fix #3831