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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>
102 lines
2.0 KiB
Go
102 lines
2.0 KiB
Go
// compile
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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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package main
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import "fmt"
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type Fn[T any] func(T)
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type FnErr[T any] func(T) error
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// Test that local generic types across functions don't conflict, and they also don't
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// conflict with local non-generic types and local variables.
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func caller0() {
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type X[T any] struct {
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fn Fn[int]
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}
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x := X[int]{func(v int) { fmt.Println(v) }}
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x.fn(0)
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}
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func caller1(val int) {
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type X[T any] struct {
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fn FnErr[int]
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}
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x := X[int]{func(v int) error { fmt.Println(v); return nil }}
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x.fn(0)
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}
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func caller1a(val int) {
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type X struct {
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fn func(float64) error
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}
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x := X{func(v float64) error { fmt.Println(v); return nil }}
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x.fn(float64(3.2))
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}
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func caller1b(val int) {
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type Y struct {
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fn func(float64) error
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}
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X := Y{func(v float64) error { fmt.Println(v); return nil }}
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X.fn(float64(3.2))
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}
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// Test that local generic types within different if clauses don't conflict.
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func caller2(val int) {
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if val > 2 {
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type X[T any] struct {
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fn func(v int) float64
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}
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x := X[int]{func(v int) float64 { fmt.Println(v); return 1.5 }}
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x.fn(0)
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} else {
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type X[T any] struct {
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fn func(v int) int
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}
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x := X[int]{func(v int) int { fmt.Println(v); return 5 }}
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x.fn(0)
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}
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}
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// Test that local generic types within different cases don't conflict with each
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// other or with local non-generic types or local variables.
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func caller3(val int) {
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switch val {
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case 0:
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type X[T any] struct {
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fn func(v int) float64
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}
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x := X[int]{func(v int) float64 { fmt.Println(v); return 1.5 }}
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x.fn(0)
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case 1:
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type X[T any] struct {
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fn func(v int) int
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}
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x := X[int]{func(v int) int { fmt.Println(v); return 5 }}
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x.fn(0)
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case 2:
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type X struct {
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fn func(v int) bool
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}
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x := X{func(v int) bool { fmt.Println(v); return false }}
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x.fn(0)
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case 3:
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type Y struct {
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fn func(v int) bool
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}
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X := Y{func(v int) bool { fmt.Println(v); return false }}
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X.fn(0)
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}
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}
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