mirror of
https://github.com/golang/go
synced 2024-11-23 06:10:05 -07:00
036245862a
Change-Id: Ie2950cdc5406915935f114bfd97ef03d965f9069 Reviewed-on: https://go-review.googlesource.com/c/go/+/274616 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com> Run-TryBot: Robert Findley <rfindley@google.com> TryBot-Result: Go Bot <gobot@golang.org>
43 lines
1.0 KiB
Go
43 lines
1.0 KiB
Go
// errorcheck -G
|
|
|
|
// 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.
|
|
|
|
// Basic type parameter list type-checking (not syntax) errors.
|
|
|
|
package tparam1
|
|
|
|
// The predeclared identifier "any" is only visible as a constraint
|
|
// in a type parameter list.
|
|
var _ any // ERROR "undefined"
|
|
func _(_ any) // ERROR "undefined"
|
|
type _[_ any /* ok here */ ] struct{}
|
|
|
|
const N = 10
|
|
|
|
type (
|
|
_[] struct{} // slice
|
|
_[N] struct{} // array
|
|
_[T any] struct{}
|
|
_[T, T any] struct{} // ERROR "T redeclared"
|
|
_[T1, T2 any, T3 any] struct{}
|
|
)
|
|
|
|
func _[T any]()
|
|
func _[T, T any]() // ERROR "T redeclared"
|
|
func _[T1, T2 any](x T1) T2
|
|
|
|
// Type parameters are visible from opening [ to end of function.
|
|
type C interface{}
|
|
|
|
func _[T interface{}]()
|
|
func _[T C]()
|
|
func _[T struct{}]() // ERROR "not an interface"
|
|
func _[T interface{ m() T }]()
|
|
func _[T1 interface{ m() T2 }, T2 interface{ m() T1 }]() {
|
|
var _ T1
|
|
}
|
|
|
|
// TODO(gri) expand this
|