runtime/cgo: build fails on linux-arm with "size of array '_check_for_64_bit_pointer_matching_GoInt' is negative"

[alevchuk]

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

go version go1.11.6 linux/arm

Does this issue reproduce with the latest release?

Yes. I tired building go1.13.10

bootstrap versions tried go1.11.6 and go-1.7

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

go env Output

$ go env
GOARCH="arm"
GOBIN=""
GOCACHE="/home/monitoring/.cache/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="arm"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/monitoring/gocode"
GOPROXY=""
GORACE=""
GOROOT="/home/monitoring/src/go"
GOTMPDIR=""
GOTOOLDIR="/home/monitoring/src/go/pkg/tool/linux_arm"
GCCGO="gccgo"
GOARM="6"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/monitoring/src/go/src/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 -marm -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build264984488=/tmp/go-build -gno-record-gcc-switches"

What did you do?

cd go/src
./all.bash

What did you expect to see?

Build success as usual (on Pi 4s this always builds fine).

What did you see instead?

~/src/go/src $ ./all.bash

Building Go cmd/dist using /usr/lib/go-1.7.
Building Go toolchain1 using /usr/lib/go-1.7.
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/arm64.
# runtime/cgo
In file included from _cgo_export.c:4:
cgo-gcc-export-header-prolog:25:14: error: size of array '_check_for_64_bit_pointer_matching_GoInt' is negative
go tool dist: FAILED: /home/monitoring/src/go/pkg/tool/linux_arm64/go_bootstrap install -gcflags=all= -ldflags=all= std cmd: exit status 2

[andybons]

@ianlancetaylor

[ianlancetaylor]

The bug title and your go env output suggest that you are building for linux/arm, but the output is for a build of linux/arm64. The error looks like you are cross-compiling, but that you are using a native compiler rather than a cross-compiler.

Why does the all.bash output say Building packages and commands for linux/arm64. ?

[alevchuk]

I'm not familiar with go code base, all.bash is part of that.

I tried export GOARCH=arm and got the same error.

Building Go cmd/dist using /usr/lib/go-1.11. (go1.11.6 linux/arm)

says "arm"

while:

Building packages and commands for host, linux/arm64.

says "arm64"

btw, I'm running a 32 bit OS (Rasbian) on 64 bit hardware

[ianlancetaylor]

It sounds like the Go build process is misunderstanding your system. I think you may need to set both GOHOSTARCH=arm and GOARCH=arm when running all.bash.

[chowyu08]

I have the same question when build arm64
# runtime/cgo In file included from _cgo_export.c:4: cgo-gcc-export-header-prolog:25:14: error: size of array ‘_check_for_64_bit_pointer_matching_GoInt’ is negative

[ALTree]

This was probably caused by incorrect env variables and there hasn't been any update for about a year, I think we can close.