cmd/compile: NewBulk too big: nbit=20196 count=986153 nword=632 size=623248696

[kulkarni-mandar-old]

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

$ go version
go version go1.20 linux/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
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/mandark/.cache/go-build"
GOENV="/home/mandark/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/mandark/go/pkg/mod"
GONOPROXY="gitlab.com"
GONOSUMDB="gitlab.com"
GOOS="linux"
GOPATH="/home/mandark/go"
GOPRIVATE="gitlab.com"
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/home/mandark/sdk/go1.20"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/mandark/sdk/go1.20/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.20"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/mandark/go/src/gitlab.com/shaadi/profile-api/go.mod"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3971895452=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Tried to debug the golang code by creating a binary using

go build -gcflags="all=-N -l" -o test . 

What did you expect to see?

Creation of debug binary

What did you see instead?

# gitlab.com/xyz/repo/pkg/profile
../../pkg/profile/state_mapping.go:8:5: internal compiler error: NewBulk too big: nbit=20196 count=986153 nword=632 size=623248696

Please file a bug report including a short program that triggers the error.
https://go.dev/issue/new

Checked the file, originally it contained static mapping, but after removing all the mappings and making it empty it is showing the same error.

Modified file contents:

package profile

type CountryData struct {
	Country     string
	CountryCode string
}

var StateMapping = map[string][]CountryData{}

Still giving internal compiler error: NewBulk too big error message when tried to debug the build.

[seankhliao]

cc @golang/compiler

[ianlancetaylor]

Is there a way that we can reproduce the problem ourselves? Thanks.

[kulkarni-mandar-old]

@ianlancetaylor , I do not think so, as the code base is private and contains multiple static mappings. This is present in a feature branch and after removing the static map it starts giving this issue on other lines which are already there in main branch and debugging is working on the main branch.

[randall77]

This error is the compiler saying "this function is to big for me to compile".
Normally we see this with large map literals, as those compile down to a lot of code. But if you removed the large map literals, there must be something else really large in your code base.

[gopherbot]

Timed out in state WaitingForInfo. Closing.

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