mirror of
https://github.com/golang/go
synced 2024-09-04 23:44:16 +00:00
5355753009
We don't usually reformat the test directory, but all of the files in test/typeparam are syntactically valid. I suspect the misformattings here are because developers aren't re-installing gofmt with -tags=typeparams, not intentionally exercising non-standard formatting. Change-Id: I3767d480434c19225568f3c7d656dc8589197183 Reviewed-on: https://go-review.googlesource.com/c/go/+/338093 Trust: Matthew Dempsky <mdempsky@google.com> Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
50 lines
797 B
Go
50 lines
797 B
Go
// run -gcflags=-G=3
|
|
|
|
// 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.
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
type E[T any] struct {
|
|
v T
|
|
}
|
|
|
|
type S1 struct {
|
|
E[int]
|
|
v string
|
|
}
|
|
|
|
type Eint = E[int]
|
|
type Ebool = E[bool]
|
|
|
|
type S2 struct {
|
|
Eint
|
|
Ebool
|
|
v string
|
|
}
|
|
|
|
type S3 struct {
|
|
*E[int]
|
|
}
|
|
|
|
func main() {
|
|
s1 := S1{Eint{2}, "foo"}
|
|
if got, want := s1.E.v, 2; got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
s2 := S2{Eint{3}, Ebool{true}, "foo"}
|
|
if got, want := s2.Eint.v, 3; got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
var s3 S3
|
|
s3.E = &Eint{4}
|
|
if got, want := s3.E.v, 4; got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
}
|