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@itsalvinchris Output of
Description
Go version
go version go1.25.0 linux/arm64
Output of go env in your module/workspace:
AR='ar' CC='gcc' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_ENABLED='1' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' CXX='g++' GCCGO='gccgo' GO111MODULE='' GOARCH='arm64' GOARM64='v8.0' GOAUTH='netrc' GOBIN='' GOCACHE='/root/.cache/go-build' GOCACHEPROG='' GODEBUG='' GOENV='/root/.config/go/env' GOEXE='' GOEXPERIMENT='nospinbitmutex' GOFIPS140='off' GOFLAGS='' GOGCCFLAGS='-fPIC -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build767931946=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='arm64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/go/src/xxxx.xxxx.xxxx/y/z/tools/abc/go.mod' GOMODCACHE='/go/pkg/mod' GONOPROXY='none' GONOSUMDB='xxxx.xxxx.xxxx' GOOS='linux' GOPATH='/go' GOPRIVATE='xxxx.xxxx.xxxx' GOPROXY='xxxx.xxxx.xxxx|proxy.golang.org|direct' GOROOT='/usr/local/go' GOSUMDB='sum.golang.org' GOTELEMETRY='local' GOTELEMETRYDIR='/root/.config/go/telemetry' GOTMPDIR='' GOTOOLCHAIN='local' GOTOOLDIR='/usr/local/go/pkg/tool/linux_arm64' GOVCS='' GOVERSION='go1.25.0' GOWORK='' PKG_CONFIG='pkg-config'
What did you do?
/workspace # go version
go version go1.25.0 linux/arm64
/workspace # export GOEXPERIMENT=nospinbitmutex
/workspace # go version
go: unknown GOEXPERIMENT spinbitmutex
What did you see happen?
go: unknown GOEXPERIMENT spinbitmutex
What did you expect to see?
Should be fine, as the 1.24 release notes mention the new GOEXPERIMENT=nospinbitmutex. In 1.25, there are no release notes that mention the removal of this experiment. However, in the goexperiment standard library, it has been removed - comparing 1.25 to 1.24. We are using this flag in our production builds for some services due to changes in latency behavior since the mutex implementation changes in 1.24.
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