os: RemoveAll possible regression with empty path #28830
Description
What version of Go are you using (go version)?
$ go version go version devel +14608976db Thu Nov 15 23:37:20 2018 +0000 linux/amd64
Does this issue reproduce with the latest release?
No - release 1.11.2 behaves as before
What operating system and processor architecture are you using (go env)?
go env Output
$ go env GOARCH="amd64" GOBIN="" GOCACHE="/home/mhilton/.cache/go-build" GOEXE="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOOS="linux" GOPATH="/home/mhilton/go" GOPROXY="" GORACE="" GOROOT="/home/mhilton/opt/go" GOTMPDIR="" GOTOOLDIR="/home/mhilton/opt/go/pkg/tool/linux_amd64" GCCGO="gccgo" CC="gcc" CXX="g++" CGO_ENABLED="1" GOMOD="" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build335628538=/tmp/go-build -gno-record-gcc-switches"
What did you do?
package main
import (
"fmt"
"os"
)
func main() {
err := os.RemoveAll("")
fmt.Printf("%v\n", err)
}What did you expect to see?
Go 1.11.2 has the output <nil> - indicating no error returned
What did you see instead?
Tip has the output invalid argument - indicating syscall.EINVAL