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cmd/go: GODEBUG=installgoroot=all appears to be broken #56687

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ALTree opened this issue Nov 10, 2022 · 2 comments
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cmd/go: GODEBUG=installgoroot=all appears to be broken #56687

ALTree opened this issue Nov 10, 2022 · 2 comments
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@bcmills @matloob
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FrozenDueToAge GoCommand cmd/go NeedsFix The path to resolution is known, but the work has not been done. release-blocker
Milestone
Go1.20

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@ALTree
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ALTree commented Nov 10, 2022 

$ git clone --depth=1 https://go.googlesource.com/go go-tip
$ export GODEBUG=installgoroot=all
$ cd go-tip/src
$ ./make.bash
Building Go cmd/dist using /home/XXX/go. (go1.19.3 linux/amd64)
Building Go toolchain1 using /home/XXX/go.
Building Go bootstrap cmd/go (go_bootstrap) using Go toolchain1.
Building Go toolchain2 using go_bootstrap and Go toolchain1.
Building Go toolchain3 using go_bootstrap and Go toolchain2.
Building packages and commands for linux/amd64.
go: no install location for directory /home/XXX/go-tip/src/unsafe outside GOPATH
        For more details see: 'go help gopath'
go tool dist: FAILED: /home/XXX/go-tip/pkg/tool/linux_amd64/go_bootstrap install std cmd: exit status 1

My env

$ ~/go/bin/go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/XXX/.cache/go-build"
GOENV="/home/XXX/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/XXX/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/XXX/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/XXX/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/XXX/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.19.3"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/XXX/go-tip/src/go.mod"
GOWORK=""
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 -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build792152691=/tmp/go-build -gno-record-gcc-switches"

I get this both on Linux and on Windows, with fresh Go installations, while building tip from source. A manual gotip install unsafe on GODEBUG=installgoroot=all fails with the same error, while other packages (like math) work and correctly put a math.a file in GOROOT/pkg.

cc @matloob
@ALTree ALTree added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Nov 10, 2022
@bcmills bcmills added the GoCommand cmd/go label Nov 10, 2022
@bcmills bcmills added this to the Go1.20 milestone Nov 10, 2022
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Change https://go.dev/cl/449376 mentions this issue: go/build: omit PkgObj for packages "unsafe" and "builtin"

@bcmills bcmills added the NeedsFix The path to resolution is known, but the work has not been done. label Nov 10, 2022
@gopherbot gopherbot removed the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Nov 10, 2022
@gopherbot
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Change https://go.dev/cl/449515 mentions this issue: cmd/go/internal/load: remove a special case for "unsafe"

gopherbot pushed a commit that referenced this issue Nov 10, 2022
@gopherbot
cmd/go/internal/load: remove a special case for "unsafe"
1e11eaa 
We had a special case to zero out the Target field for package
"unsafe", which is not imported from a normal object file.

As of CL 449376 that special case has been folded into go/build's
logic for setting the PkgObj field, so the special case in
cmd/go/internal/load has become redundant.

(Noticed while investigating CL 449376.)

Updates #47257.
Updates #56687.

Change-Id: I1668123aa6230097aa75e55380d3e2c7937c4b64
Reviewed-on: https://go-review.googlesource.com/c/go/+/449515
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
@golang golang locked and limited conversation to collaborators Nov 10, 2023
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@matloob matloob

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@ALTree @bcmills @gopherbot @matloob