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fmt: windows go1.24.0 could not import reflect (can't find export data (bufio: buffer full)) #71933

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quentin-k opened this issue Feb 24, 2025 · 8 comments
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fmt: windows go1.24.0 could not import reflect (can't find export data (bufio: buffer full)) #71933

quentin-k opened this issue Feb 24, 2025 · 8 comments

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@quentin-k
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Go version

go version go1.24.0 windows/amd64

Output of go env in your module/workspace:

set AR=ar
set CC=gcc
set CGO_CFLAGS=-O2 -g
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-O2 -g
set CGO_ENABLED=0
set CGO_FFLAGS=-O2 -g
set CGO_LDFLAGS=-O2 -g
set CXX=g++
set GCCGO=gccgo
set GO111MODULE=
set GOAMD64=v1
set GOARCH=amd64
set GOAUTH=netrc
set GOBIN=
set GOCACHE=C:\Users\REDACTED\AppData\Local\go-build
set GOCACHEPROG=
set GODEBUG=
set GOENV=C:\Users\REDACTED\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFIPS140=off
set GOFLAGS=
set GOGCCFLAGS=-m64 -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=C:\Users\REDACTED\AppData\Local\Temp\go-build4059615952=/tmp/go-build -gno-record-gcc-switches
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMOD=C:\Users\REDACTED\source\go\hello\go.mod
set GOMODCACHE=C:\Users\REDACTED\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\REDACTED\go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=C:\Program Files\Go
set GOSUMDB=sum.golang.org
set GOTELEMETRY=local
set GOTELEMETRYDIR=C:\Users\REDACTED\AppData\Roaming\go\telemetry
set GOTMPDIR=
set GOTOOLCHAIN=auto
set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=go1.24.0
set GOWORK=
set PKG_CONFIG=pkg-config

What did you do?

I was working on a project and go failed to compile the program with an error in internal/fmtsort and internal/filepathlite. I reproduced the issue with the following code saved as hello.go

package main

import (
	"fmt"
)

func main() {
	fmt.Printf("Hello\n")
}

I tried with go1.23.6 and on go.dev/play it compiled just fine.

What did you see happen?

go build hello.go

internal/fmtsort

C:\Program Files\Go\src\internal\fmtsort\sort.go:13:2: could not import reflect (can't find export data (bufio: buffer full))
C:\Program Files\Go\src\internal\fmtsort\sort.go:136:1: missing return

internal/filepathlite

C:\Program Files\Go\src\internal\filepathlite\path.go:14:2: could not import io/fs (can't find export data (bufio: buffer full))

What did you expect to see?

no errors
@seankhliao
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that looks like you have a corrupted installation of go.

@seankhliao seankhliao closed this as not planned Won't fix, can't repro, duplicate, stale Feb 24, 2025
@ianlancetaylor
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Try removing the entire previous installation and reinstalling.

@quentin-k
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I've tried doing that by running the uninstaller as well as by removing the go directory in my home dir then re-running the installer and it still doesn't work. I tried installing it in windows sandbox to see if it was an issue with the installer I downloaded and it works just fine when I installed it there.

@ianlancetaylor
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I don't know what is happening, but nobody else is reporting this problem, and you yourself are able to make it work in a sandbox. There must be something specific about the system you are using. For example, maybe it's low on disk space. I don't think we're going to be able to help you. Do let us know if you can reproduce the problem on a different system. Sorry.

@thediveo
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"security" software is also a constant source of corruption, in more than one meaning.

@quentin-k
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I tried putting it on a dev drive and disabling security tools on said drive and it still didn't work, even with the source code in the dev drive as well. I have plenty of storage available and resource utilization is low so I don't think those are causing an issue with corruption. As far as I understand, putting the install onto a dev drive should isolate it from any components that might've caused corruption. Even an exclusion on the go install path when it was not on a dev drive still had corruption. I know it is likely an issue with my system setup but am confused as to where the issue lies. go1.23.6 does work which adds more confusion.

@thediveo
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That could point to the exception rules for "defender" because to my limited understanding devdrive comes with a set of exception rules, but with tools changing that will always be outdated.

@quentin-k
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go 1.24.1 fixes the issue

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4 participants
@ianlancetaylor @thediveo @seankhliao @quentin-k