os: MkdirAll exits without creating all folders

[AlexRouSg]

Please answer these questions before submitting your issue. Thanks!

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

1.8.1

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH=""
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build846921896=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

What did you do?

If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.

path := "something/with/nested/folders"
if err := os.MkdirAll(path, 0755); err != nil {
	log.Fatalln(err)
}

if err := os.Chdir(path); err != nil {
	log.Fatalln(err)
}

What did you expect to see?

Directory created and changed working directory.

What did you see instead?

abort: error getting current working directory: No such file or directory

Last folder in the path was never created, even sleeping does not create the folder. Only exiting the program does the folder appear in the filesystem.

[ianlancetaylor]

Please show us a complete, standalone, preferably small, program that demonstrates the problem. Thanks.

[AlexRouSg]

Ok this is embarrassing ... for some reason it started working. I didn't even closed my editor/terminals and it just decided to work.

[AlexRouSg]

This is seriously weird. If I just have the mkdirall and the chdir commands it works. But if it's with the rest of the file it doesn't?

package main

import (
	"log"
	"os"
	"os/exec"
	"strings"
	"runtime"
)

const SDL_VR = "2.0.5"

func run(file string, args ...string) {
	cmd := exec.Command(file, args...)
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	cmd.Env = os.Environ()
	//cmd.Env = append(cmd.Env, "CC=musl-gcc")

	err := cmd.Run()

	if err != nil {
		os.Exit(1)
	}
}

func main() {
	path := os.Args[1] + "Build/SDL"

	if err := os.MkdirAll(path, 0755); err != nil {
		log.Fatalln(err)
	}

	if err := os.Chdir(path); err != nil {
		log.Fatalln(err)
	}

	if _, err := os.Stat(path); err == nil {
		out, err := exec.Command("hg", "id").Output()

		if err == nil {
			tag := strings.Fields(string(out))[1]

			if tag == "release-"+SDL_VR+"/tip" {
				if err := os.Chdir(path); err != nil {
					log.Fatalln(err)
				}

				run("sh", "-c", path+"/configure --disable-shared --prefix="+path)
				run("sh", "-c", "make -j " + string(runtime.NumCPU()))
				run("sh", "-c", "make install")
				os.Exit(0)
			}
		}

		os.RemoveAll(path)
	}

	run("hg", "clone", "http://hg.libsdl.org/SDL#release-"+SDL_VR)
	run("hg", "tag", "-l", "release-"+SDL_VR)
	run("sh", "-c", path+"/configure --disable-shared --prefix="+path)
	run("sh", "-c", "make -j " + string(runtime.NumCPU()))
	run("sh", "-c", "make install")
}

[AlexRouSg]

If I comment out the os.RemoveAll(path) it works??

[mattn]

Please make sure what happen with your code. please check all of err returned.

[AlexRouSg]

There is no error from os.MkdirAll and os.Chdir only says "abort: error getting current working directory: No such file or directory"

[mattn]

This seems not be a bug of Go. Please check output of commands you run.

[AlexRouSg]

OK my bad, thought the output was coming from os.Chdir lol
Was actually one of the commands I'm running