go issue50276 源码
golang issue50276 代码
文件路径：/src/cmd/compile/internal/types2/testdata/fixedbugs/issue50276.go
// 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.
package p
// simplified test case
type transform[T any] struct{}
type pair[S any] struct {}
var _ transform[step]
type box transform[step]
type step = pair[box]
// test case from issue
type Transform[T any] struct{ hold T }
type Pair[S, T any] struct {
First S
Second T
}
var first Transform[Step]
// This line doesn't use the Step alias, and it compiles fine if you uncomment it.
var second Transform[Pair[Box, interface{}]]
type Box *Transform[Step]
// This line is the same as the `first` line, but it comes after the Box declaration and
// does not break the compile.
var third Transform[Step]
type Step = Pair[Box, interface{}]
// This line also does not break the compile
var fourth Transform[Step]
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