// Copyright 2015 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 race_test import ( "fmt" "testing" ) var issue12664 = "hi" func TestRaceIssue12664(t *testing.T) { c := make(chan struct{}) go func() { issue12664 = "bye" close(c) }() fmt.Println(issue12664) <-c } type MyI interface { foo() } type MyT int func (MyT) foo() { } var issue12664_2 MyT = 0 func TestRaceIssue12664_2(t *testing.T) { c := make(chan struct{}) go func() { issue12664_2 = 1 close(c) }() func(x MyI) { // Never true, but prevents inlining. if x.(MyT) == -1 { close(c) } }(issue12664_2) <-c } var issue12664_3 MyT = 0 func TestRaceIssue12664_3(t *testing.T) { c := make(chan struct{}) go func() { issue12664_3 = 1 close(c) }() var r MyT var i any = r issue12664_3 = i.(MyT) <-c } var issue12664_4 MyT = 0 func TestRaceIssue12664_4(t *testing.T) { c := make(chan struct{}) go func() { issue12664_4 = 1 close(c) }() var r MyT var i MyI = r issue12664_4 = i.(MyT) <-c }