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cmd/go: replace directive causes build to take 30 seconds #29920

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levblanc opened this issue Jan 24, 2019 · 1 comment
Closed

cmd/go: replace directive causes build to take 30 seconds #29920

levblanc opened this issue Jan 24, 2019 · 1 comment
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FrozenDueToAge modules NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
Milestone
Go1.13

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@levblanc
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What version of Go are you using (go version)?

$ go version
go version go1.11.4 darwin/amd64

Does this issue reproduce with the latest release?

Yes.

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GOARCH="amd64"
GOBIN="/Users/levblanc/go/bin"
GOCACHE="/Users/levblanc/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/levblanc/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/levblanc/projects/x-crypto-issue/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/yk/p1tyzt2n5m38k09cbsgktxhh0000gn/T/go-build141072027=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

  • imported golang.org/x/crypto/bcrypt in my program

  • alias golang.org/x/crypto@v0.0.0 to github.com/golang/crypto@latest with go mod

Here is the repo to reproduce the problem.

You can find detailed description and my thoughts in the README file.

What did you expect to see?

go run main.go works as normal.

What did you see instead?

go run main.go takes around 30 seconds to print out the result of my simple program,

while go run -mod=vendor main.go works well.
@gopherbot gopherbot added this to the Unreleased milestone Jan 24, 2019
@FiloSottile FiloSottile changed the title x/crypto/bcrypt: question on sub-dependency blowfish cmd/go: replace directive causes build to take 30 seconds Jan 24, 2019
@FiloSottile FiloSottile modified the milestones: Unreleased, Go1.13 Jan 24, 2019
@FiloSottile FiloSottile added NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. modules labels Jan 24, 2019
@bcmills
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bcmills commented Jan 24, 2019

Duplicate of #27859.

@bcmills bcmills closed this as completed Jan 24, 2019
@golang golang locked and limited conversation to collaborators Jan 24, 2020
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FrozenDueToAge modules NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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Milestone
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@FiloSottile @levblanc @bcmills @gopherbot