mirror of
https://github.com/golang/go
synced 2024-11-08 18:46:16 -07:00
38 lines
898 B
Go
38 lines
898 B
Go
|
// run
|
||
|
|
|
||
|
|
// Copyright 2022 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
// The Go 1.18 frontend failed to disambiguate instantiations of
|
||
|
|
// different, locally defined generic types with the same name.
|
||
|
|
//
|
||
|
|
// The unified frontend also exposed the scope-disambiguation mangling
|
||
|
|
// to end users in reflect data.
|
||
|
|
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"reflect"
|
||
|
|
)
|
||
|
|
|
||
|
|
func one() any { type T[_ any] int; return T[int](0) }
|
||
|
|
func two() any { type T[_ any] int; return T[int](0) }
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
p, q := one(), two()
|
||
|
|
|
||
|
|
// p and q have different dynamic types; this comparison should
|
||
|
|
// evaluate false.
|
||
|
|
if p == q {
|
||
|
|
panic("bad type identity")
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, x := range []any{p, q} {
|
||
|
|
// The names here should not contain "·1" or "·2".
|
||
|
|
if name := reflect.TypeOf(x).String(); name != "main.T[int]" {
|
||
|
|
panic(name)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|