os: ReadDir fails on file systems without File ID support on Windows #61907
Description
What version of Go are you using (go version)?
$ go version go version go1.21.0 windows/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 set GO111MODULE= set GOARCH=amd64 set GOBIN= set GOCACHE=C:\Users\hajimehoshi\AppData\Local\go-build set GOENV=C:\Users\hajimehoshi\AppData\Roaming\go\env set GOEXE=.exe set GOEXPERIMENT= set GOFLAGS= set GOHOSTARCH=amd64 set GOHOSTOS=windows set GOINSECURE= set GOMODCACHE=C:\Users\hajimehoshi\go\pkg\mod set GONOPROXY= set GONOSUMDB= set GOOS=windows set GOPATH=C:\Users\hajimehoshi\go set GOPRIVATE= set GOPROXY=https://proxy.golang.org,direct set GOROOT=C:\Program Files\Go set GOSUMDB=sum.golang.org set GOTMPDIR= set GOTOOLCHAIN=auto set GOTOOLDIR=C:\Program Files\Go\pkg\tool\windows_amd64 set GOVCS= set GOVERSION=go1.21.0 set GCCGO=gccgo set GOAMD64=v1 set AR=ar set CC=gcc set CXX=g++ set CGO_ENABLED=1 set GOMOD=\\Mac\Home\unctest\go.mod set GOWORK= set CGO_CFLAGS=-O2 -g set CGO_CPPFLAGS= set CGO_CXXFLAGS=-O2 -g set CGO_FFLAGS=-O2 -g set CGO_LDFLAGS=-O2 -g set PKG_CONFIG=pkg-config set GOGCCFLAGS=-m64 -mthreads -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=C:\Users\HAJIME~1\AppData\Local\Temp\go-build3663691949=/tmp/go-build -gno-record-gcc-switches
What did you do?
Prepare these files in a UNC directory starting with \\ like \\Mac\Home\unctest. Here, I assume the current directory is \\Mac\Home\unctest:
\\Mac\Home\unctest\go.mod:
module foo
go 1.21
\\Mac\Home\unctest\main.go
package main
import (
"foo/bar"
)
func main() {
bar.Hello()
}\\Mac\Home\unctest\bar\hello.go
package bar
func Hello() {
println("bar")
} And run go run . at \\Mac\Home\unctest.
What did you expect to see?
bar is printed
What did you see instead?
Running the program fails:
PS Microsoft.PowerShell.Core\FileSystem::\\Mac\Home\unctest> go run .
GetFileInformationByHandleEx \\Mac\Home\unctest: The parameter is incorrect.