mirror of
https://github.com/golang/go
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0b8a9ccb25
Except unsafe.Pointer. It has a different Kind, which makes it trickier. Change-Id: I12582afb6e591bea35da9e43ac8d141ed19532a3 Reviewed-on: https://go-review.googlesource.com/c/go/+/338749 Trust: Keith Randall <khr@golang.org> Trust: Dan Scales <danscales@google.com> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Dan Scales <danscales@google.com>
50 lines
869 B
Go
50 lines
869 B
Go
// run -gcflags=-G=3
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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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type I interface {
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foo() int
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}
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// There should be one instantiation of f for both squarer and doubler.
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// Similarly, there should be one instantiation of f for both *incrementer and *decrementer.
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func f[T I](x T) int {
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return x.foo()
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}
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type squarer int
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func (x squarer) foo() int {
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return int(x*x)
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}
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type doubler int
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func (x doubler) foo() int {
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return int(2*x)
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}
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type incrementer int16
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func (x *incrementer) foo() int {
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return int(*x+1)
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}
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type decrementer int32
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func (x *decrementer) foo() int{
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return int(*x-1)
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}
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func main() {
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println(f(squarer(5)))
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println(f(doubler(5)))
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var i incrementer = 5
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println(f(&i))
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var d decrementer = 5
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println(f(&d))
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}
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