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