golang issue39768 代码
文件路径：/src/cmd/compile/internal/types2/testdata/fixedbugs/issue39768.go
/ Copyright 2020 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
/ For now, a lone type parameter is not permitted as RHS in a type declaration (issue #45639).
/ type T[P any] P
/ type A = T / ERROR cannot use generic type
/ var x A[int]
/ var _ A
/
/ type B = T[int]
/ var y B = x
/ var _ B /* ERROR not a generic type */ [int]
/ test case from issue
type Vector[T any] []T
type VectorAlias = Vector / ERROR cannot use generic type
var v Vector[int]