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mirror of https://github.com/golang/go synced 2024-11-11 23:20:24 -07:00
go/test/live2.go
Russ Cox 75d3f62b3c [dev.garbage] cmd/gc, runtime: add locks around print statements
Now each C printf, Go print, or Go println is guaranteed
not to be interleaved with other calls of those functions.
This should help when debugging concurrent failures.

LGTM=rlh
R=rlh
CC=golang-codereviews
https://golang.org/cl/169120043
2014-11-05 14:42:54 -05:00

40 lines
870 B
Go

// errorcheck -0 -live -wb=0
// Copyright 2014 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.
// liveness tests with inlining ENABLED
// see also live.go.
package main
// issue 8142: lost 'addrtaken' bit on inlined variables.
// no inlining in this test, so just checking that non-inlined works.
func printnl()
type T40 struct {
m map[int]int
}
func newT40() *T40 {
ret := T40{}
ret.m = make(map[int]int) // ERROR "live at call to makemap: &ret"
return &ret
}
func bad40() {
t := newT40() // ERROR "live at call to makemap: ret"
printnl() // ERROR "live at call to printnl: ret"
_ = t
}
func good40() {
ret := T40{}
ret.m = make(map[int]int) // ERROR "live at call to makemap: ret"
t := &ret
printnl() // ERROR "live at call to printnl: ret"
_ = t
}