Please answer these questions before submitting your issue. Thanks! What version of Go are you using (go version)?
go version go1.9.3 darwin/amd64 Does this issue reproduce with the latest release? yes What operating system and processor architecture are you using (go env)? GOARCH="amd64" GOBIN="" GOEXE="" GOHOSTARCH="amd64" GOHOSTOS="darwin" GOOS="darwin" GOPATH="/Users/ariesdevil/Dropbox/workspace/go_workspace" GORACE="" GOROOT="/usr/local/Cellar/go/1.9.3/libexec" GOTOOLDIR="/usr/local/Cellar/go/1.9.3/libexec/pkg/tool/darwin_amd64" GCCGO="gccgo" CC="clang" GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/h2/xl15t9g94tgfwclshzl086bh0000gp/T/go-build125147941=/tmp/go-build -gno-record-gcc-switches -fno-common" CXX="clang++" CGO_ENABLED="1" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" What did you do? code1: play.golang.org/p/8rcO11QS8un (@ianlancetaylor answerd at https://github.com/golang/go/issues/23728#issuecomment-363771924) code2: https://play.golang.org/p/fJXhK8w22uu Above code2 sometimes run perfect and sometimes deadlock on my machine. <https://lh3.googleusercontent.com/-j-2Sg_4wENk/WnsPXZktt7I/AAAAAAAAb9M/vI8Ci9g8k9gZ_83XWS6qgR2bxjuHN8w1ACLcBGAs/s1600/%25E5%25B1%258F%25E5%25B9%2595%25E5%25BF%25AB%25E7%2585%25A7%2B2018-02-07%2B22.10.22.png> But if I put it in a goroutine, the result is confused: https://play.golang.org/p/oUmMr8TM2sz success https://play.golang.org/p/54eLI7x5FwD failed notice line 25 when I use ``` case worker := <-source: idle <- worker ``` instead of: ``` case idle <- <-source: ``` it works. What did you expect to see? I think it should not deadlock. What did you see instead? deadlock sometimes. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
