go/test/fixedbugs/issue4468.go
Robert Griesemer fe762b6466 cmd/compile/internal/gc: better error message for parenthesized go/defer exprs
Change-Id: Ie24d56422ae2196198a6c306716fa867c1442d6e
Reviewed-on: https://go-review.googlesource.com/17043
Reviewed-by: Chris Manghane <cmang@golang.org>
2015-11-18 22:26:07 +00:00

32 lines
760 B
Go

// errorcheck
// Copyright 2012 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.
// Issue 4468: go/defer calls may not be parenthesized.
package p
type T int
func (t *T) F() T {
return *t
}
type S struct {
t T
}
func F() {
go F // ERROR "must be function call"
defer F // ERROR "must be function call"
go (F) // ERROR "must be function call|must not be parenthesized"
defer (F) // ERROR "must be function call|must not be parenthesized"
go (F()) // ERROR "must be function call|must not be parenthesized"
defer (F()) // ERROR "must be function call|must not be parenthesized"
var s S
(&s.t).F()
go (&s.t).F()
defer (&s.t).F()
}