1 // Copyright 2017 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // The bug happened like this:
6 // 1. The main binary adds an itab for *json.UnsupportedValueError / error
7 // (concrete type / interface type). This itab goes in hash bucket 0x111.
8 // 2. The plugin adds that same itab again. That makes a cycle in the itab
9 // chain rooted at hash bucket 0x111.
10 // 3. The main binary then asks for the itab for *dynamodbstreamsevt.Event /
11 // json.Unmarshaler. This itab happens to also live in bucket 0x111.
12 // The lookup code goes into an infinite loop searching for this itab.
14 // The code is carefully crafted so that the two itabs are both from the
15 // same bucket, and so that the second itab doesn't exist in
16 // the itab hashmap yet (so the entire linked list must be searched).
22 "testplugin/issue18676/dynamodbstreamsevt"
26 plugin.Open("plugin.so")
28 var x interface{} = (*dynamodbstreamsevt.Event)(nil)
29 if _, ok := x.(json.Unmarshaler); !ok {