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Add more checks before accessing struct pointer; ref #3831

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2017-10-17 07:43:35 +09:00
parent be2c1592ed
commit fb85855fa1
1 changed files with 4 additions and 2 deletions
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mrbgems/mruby-struct/src/struct.c
+4 -2
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@@ -147,11 +147,13 @@ 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 *ptr;
mrb_value val;
mrb_get_args(mrb, "o", &val);
mrb_struct_modify(mrb, obj);
if (i >= RSTRUCT_LEN(obj)) {
ptr = RSTRUCT_PTR(obj);
if (ptr == NULL || i >= RSTRUCT_LEN(obj)) {
mrb_ary_set(mrb, obj, i, val);
}
else {