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[short] skip
[!race] skip

go test testrace

! go test -race testrace
stdout 'FAIL: TestRace'
! stdout 'PASS'
! stderr 'PASS'

! go test -race testrace -run XXX -bench .
stdout 'FAIL: BenchmarkRace'
! stdout 'PASS'
! stderr 'PASS'

-- go.mod --
module testrace

go 1.16
-- race_test.go --
package testrace

import "testing"

func TestRace(t *testing.T) {
	for i := 0; i < 10; i++ {
		c := make(chan int)
		x := 1
		go func() {
			x = 2
			c <- 1
		}()
		x = 3
		<-c
		_ = x
	}
}

func BenchmarkRace(b *testing.B) {
	for i := 0; i < b.N; i++ {
		c := make(chan int)
		x := 1
		go func() {
			x = 2
			c <- 1
		}()
		x = 3
		<-c
		_ = x
	}
}