mirror of
https://github.com/golang/go
synced 2024-09-04 23:44:16 +00:00
![Robert Griesemer](/assets/img/avatar_default.png)
This is a feature that is not understood well enough and may have subtle repercussions impacting future changes. Disable for Go 1.18. The actual change is trivial: disable a branch through a flag. The remaining changes are adjustments to tests. Fixes #51576. Change-Id: Ib77b038b846711a808315a8889b3904e72367bce Reviewed-on: https://go-review.googlesource.com/c/go/+/391135 Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
59 lines
921 B
Go
59 lines
921 B
Go
// run
|
|
|
|
// 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 main
|
|
|
|
func main() {}
|
|
|
|
// Field accesses through type parameters are disabled
|
|
// until we have a more thorough understanding of the
|
|
// implications on the spec. See issue #51576.
|
|
|
|
/*
|
|
import "fmt"
|
|
|
|
type MyStruct struct {
|
|
b1, b2 string
|
|
E
|
|
}
|
|
|
|
type E struct {
|
|
val int
|
|
}
|
|
|
|
type C interface {
|
|
~struct {
|
|
b1, b2 string
|
|
E
|
|
}
|
|
}
|
|
|
|
func f[T C]() T {
|
|
var x T = T{
|
|
b1: "a",
|
|
b2: "b",
|
|
}
|
|
|
|
if got, want := x.b2, "b"; got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
x.b1 = "y"
|
|
x.val = 5
|
|
|
|
return x
|
|
}
|
|
|
|
func main() {
|
|
x := f[MyStruct]()
|
|
if got, want := x.b1, "y"; got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
if got, want := x.val, 5; got != want {
|
|
panic(fmt.Sprintf("got %d, want %d", got, want))
|
|
}
|
|
}
|
|
*/
|