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// 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()
}
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