Go version
go version devel go1.24-608acff847 Wed Jan 22 10:13:04 2025 -0800 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=1
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\mattn\AppData\Local\go-build
set GOCACHEPROG=
set GODEBUG=
set GOENV=C:\Users\mattn\AppData\Roaming\go\env
set GOEXE=.exe
set GOEXPERIMENT=
set GOFIPS140=off
set GOFLAGS=
set GOGCCFLAGS=-m64 -mthreads -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=C:\Users\mattn\AppData\Local\Temp\go-build942228727=/tmp/go-build -gno-record-gcc-switches
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GOMOD=C:\dev\go-tip\src\go.mod
set GOMODCACHE=C:\Users\mattn\go\pkg\mod
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:\Users\mattn\go
set GOPRIVATE=
set GOPROXY=https://proxy.golang.org,direct
set GOROOT=c:\dev\go-tip
set GOSUMDB=sum.golang.org
set GOTELEMETRY=local
set GOTELEMETRYDIR=C:\Users\mattn\AppData\Roaming\go\telemetry
set GOTMPDIR=
set GOTOOLCHAIN=auto
set GOTOOLDIR=c:\dev\go-tip\pkg\tool\windows_amd64
set GOVCS=
set GOVERSION=devel go1.24-608acff847 Wed Jan 22 10:13:04 2025 -0800
set GOWORK=
set PKG_CONFIG=pkg-config
What did you do?
Run this Go code.
https://go.dev/play/p/eBJHlscxxcn
What did you see happen?
filename was broken.

What did you expect to see?

Go version
go version devel go1.24-608acff847 Wed Jan 22 10:13:04 2025 -0800 windows/amd64
Output of
go envin your module/workspace:What did you do?
Run this Go code.
https://go.dev/play/p/eBJHlscxxcn
What did you see happen?
filename was broken.
What did you expect to see?