зеркало из https://github.com/CryptoPro/go.git
150 строки
1.9 KiB
Go
150 строки
1.9 KiB
Go
// run -gcflags=-G=3
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// Copyright 2021 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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// derived & expanded from cmd/compile/internal/types2/testdata/fixedbugs/issue44688.go2
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package main
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type A1[T any] struct {
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val T
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}
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func (p *A1[T]) m1(val T) {
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p.val = val
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}
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type A2[T any] interface {
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m2(T)
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}
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type B1[T any] struct {
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filler int
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*A1[T]
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A2[T]
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}
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type B2[T any] interface {
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A2[T]
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}
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type ImpA2[T any] struct {
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f T
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}
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func (a2 *ImpA2[T]) m2(s T) {
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a2.f = s
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}
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type C[T any] struct {
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filler1 int
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filler2 int
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B1[T]
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}
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type D[T any] struct {
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filler1 int
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filler2 int
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filler3 int
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C[T]
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}
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func test1[T any](arg T) {
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// calling embedded methods
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var b1 B1[T]
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b1.A1 = &A1[T]{}
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b1.A2 = &ImpA2[T]{}
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b1.A1.m1(arg)
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b1.m1(arg)
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b1.A2.m2(arg)
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b1.m2(arg)
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var b2 B2[T]
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b2 = &ImpA2[T]{}
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b2.m2(arg)
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// a deeper nesting
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var d D[T]
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d.C.B1.A1 = &A1[T]{}
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d.C.B1.A2 = &ImpA2[T]{}
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d.m1(arg)
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d.m2(arg)
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// calling method expressions
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m1x := B1[T].m1
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m1x(b1, arg)
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// TODO(khr): reenable these.
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//m2x := B2[T].m2
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//m2x(b2, arg)
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// calling method values
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m1v := b1.m1
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m1v(arg)
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m2v := b1.m2
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m2v(arg)
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b2v := b2.m2
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b2v(arg)
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}
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func test2() {
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// calling embedded methods
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var b1 B1[string]
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b1.A1 = &A1[string]{}
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b1.A2 = &ImpA2[string]{}
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b1.A1.m1("")
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b1.m1("")
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b1.A2.m2("")
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b1.m2("")
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var b2 B2[string]
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b2 = &ImpA2[string]{}
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b2.m2("")
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// a deeper nesting
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var d D[string]
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d.C.B1.A1 = &A1[string]{}
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d.C.B1.A2 = &ImpA2[string]{}
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d.m1("")
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d.m2("")
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// calling method expressions
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m1x := B1[string].m1
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m1x(b1, "")
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m2x := B2[string].m2
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m2x(b2, "")
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// calling method values
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m1v := b1.m1
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m1v("")
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m2v := b1.m2
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m2v("")
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b2v := b2.m2
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b2v("")
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}
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// actual test case from issue
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type A[T any] struct{}
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func (*A[T]) f(T) {}
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type B[T any] struct{ A[T] }
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func test3() {
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var b B[string]
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b.A.f("")
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b.f("")
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}
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func main() {
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test1[string]("")
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test2()
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test3()
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}
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