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go/test/typeparam/typeswitch4.go
Matthew Dempsky e24977d231 all: avoid use of cmd/compile -G flag in tests
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>
2022-03-01 19:45:34 +00:00

39 lines
699 B
Go

// run
// 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
type I interface{ foo() int }
type myint int
func (x myint) foo() int { return int(x) }
type myfloat float64
func (x myfloat) foo() int { return int(x) }
type myint32 int32
func (x myint32) foo() int { return int(x) }
func f[T I](i I) {
switch x := i.(type) {
case T, myint32:
println("T/myint32", x.foo())
default:
println("other", x.foo())
}
}
func main() {
f[myfloat](myint(6))
f[myfloat](myfloat(7))
f[myfloat](myint32(8))
f[myint32](myint32(9))
f[myint](myint32(10))
f[myint](myfloat(42))
}