mirror of
https://github.com/golang/go
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e24977d231
The next CL will remove the -G flag, effectively hard-coding it to its current default (-G=3). Change-Id: Ib4743b529206928f9f1cca9fdb19989728327831 Reviewed-on: https://go-review.googlesource.com/c/go/+/388534 Reviewed-by: Keith Randall <khr@golang.org> Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
68 lines
1.1 KiB
Go
68 lines
1.1 KiB
Go
// run
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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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// Make sure we handle instantiated empty interfaces.
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package main
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type E[T any] interface {
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}
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//go:noinline
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func f[T any](x E[T]) interface{} {
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return x
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}
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//go:noinline
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func g[T any](x interface{}) E[T] {
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return x
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}
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type I[T any] interface {
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foo()
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}
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type myint int
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func (x myint) foo() {}
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//go:noinline
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func h[T any](x I[T]) interface{ foo() } {
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return x
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}
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//go:noinline
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func i[T any](x interface{ foo() }) I[T] {
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return x
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}
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func main() {
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if f[int](1) != 1 {
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println("test 1 failed")
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}
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if f[int](2) != (interface{})(2) {
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println("test 2 failed")
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}
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if g[int](3) != 3 {
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println("test 3 failed")
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}
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if g[int](4) != (E[int])(4) {
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println("test 4 failed")
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}
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if h[int](myint(5)) != myint(5) {
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println("test 5 failed")
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}
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if h[int](myint(6)) != interface{ foo() }(myint(6)) {
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println("test 6 failed")
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}
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if i[int](myint(7)) != myint(7) {
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println("test 7 failed")
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}
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if i[int](myint(8)) != I[int](myint(8)) {
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println("test 8 failed")
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}
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}
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