mirror of
https://github.com/golang/go
synced 2024-11-08 18:36:22 -07:00
f14067f3c1
Fixes #23837 Change-Id: I53f524d87946a0065f28a4ddbe47b40f2b43c459 Reviewed-on: https://go-review.googlesource.com/c/145757 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
71 lines
1.1 KiB
Go
71 lines
1.1 KiB
Go
// run
|
|
|
|
// Copyright 2018 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
|
|
|
|
//go:noinline
|
|
func f(p, q *struct{}) bool {
|
|
return *p == *q
|
|
}
|
|
|
|
type T struct {
|
|
x struct{}
|
|
y int
|
|
}
|
|
|
|
//go:noinline
|
|
func g(p, q *T) bool {
|
|
return p.x == q.x
|
|
}
|
|
|
|
//go:noinline
|
|
func h(p, q func() struct{}) bool {
|
|
return p() == q()
|
|
}
|
|
|
|
func fi(p, q *struct{}) bool {
|
|
return *p == *q
|
|
}
|
|
|
|
func gi(p, q *T) bool {
|
|
return p.x == q.x
|
|
}
|
|
|
|
func hi(p, q func() struct{}) bool {
|
|
return p() == q()
|
|
}
|
|
|
|
func main() {
|
|
shouldPanic(func() { f(nil, nil) })
|
|
shouldPanic(func() { g(nil, nil) })
|
|
shouldPanic(func() { h(nil, nil) })
|
|
shouldPanic(func() { fi(nil, nil) })
|
|
shouldPanic(func() { gi(nil, nil) })
|
|
shouldPanic(func() { hi(nil, nil) })
|
|
n := 0
|
|
inc := func() struct{} {
|
|
n++
|
|
return struct{}{}
|
|
}
|
|
h(inc, inc)
|
|
if n != 2 {
|
|
panic("inc not called")
|
|
}
|
|
hi(inc, inc)
|
|
if n != 4 {
|
|
panic("inc not called")
|
|
}
|
|
}
|
|
|
|
func shouldPanic(x func()) {
|
|
defer func() {
|
|
if recover() == nil {
|
|
panic("did not panic")
|
|
}
|
|
}()
|
|
x()
|
|
}
|