go issue49739 源码

  • 2022-07-15
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golang issue49739 代码

文件路径:/src/cmd/compile/internal/types2/testdata/fixedbugs/issue49739.go

// Copyright 2021 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.

// Verify that we get an empty type set (not just an error)
// when using an invalid ~A.

package p

type A int
type C interface {
	~ /* ERROR invalid use of ~ */ A
}

func f[_ C]()              {}
func g[_ interface{ C }]() {}
func h[_ C | int]()        {}

func _() {
	_ = f[int /* ERROR cannot implement C \(empty type set\) */]
	_ = g[int /* ERROR cannot implement interface{C} \(empty type set\) */]
	_ = h[int]
}

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