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go/test/fixedbugs/issue15975.go
Cherry Zhang f3689d1382 cmd/compile: nilcheck interface value in go/defer interface call for SSA
This matches the behavior of the legacy backend.

Fixes #15975 (if this is the intended behavior)

Change-Id: Id277959069b8b8bf9958fa8f2cbc762c752a1a19
Reviewed-on: https://go-review.googlesource.com/23820
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-06-08 20:35:53 +00:00

37 lines
572 B
Go

// run
// Copyright 2016 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
var fail bool
type Closer interface {
Close()
}
func nilInterfaceDeferCall() {
var x Closer
defer x.Close()
// if it panics when evaluating x.Close, it should not reach here
fail = true
}
func shouldPanic(f func()) {
defer func() {
if recover() == nil {
panic("did not panic")
}
}()
f()
}
func main() {
shouldPanic(nilInterfaceDeferCall)
if fail {
panic("fail")
}
}