CL https://golang.org/cl/25165 mentions this issue.

What did you do?
set GOROOT=c:\dev\go
set GOPATH=c:\dev\gopath
go generate with //go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go syscall_windows.go

What did you do? Did you run "go generate" command? Which directory?

I don't understand what the problem is. Please provide more details. Thank you.

Alex

Few days ago, I contributed some patches for https://github.com/tompng/pokemon-go .
I modified pokemon-go to use https://github.com/jteeuwen/go-bindata .

In my configuration, GOROOT and GOPATH have same prefix part C:\dev\go but not same directory as you can see in above. But mksyscall_windows.go handle those as same. So the code made by mksyscall_windows.go are generated as pkgStd because IsStdRepo doesn't check trailing path separator as delimiter.
If I have last backslash in GOPATH and GOROOT, it will works fine. But official installation instruction doesn't have trailing slash/backslash in the environment variables.

Few days ago, I contributed some patches for https://github.com/tompng/pokemon-go .
I modified pokemon-go to use https://github.com/jteeuwen/go-bindata .

I checked github.com/tompng/pokemon-go package. It does not use mksyscall_windows.go. Why are you telling me about github.com/tompng/pokemon-go package?

In my configuration, GOROOT and GOPATH have same prefix part C:\dev\go but not same directory as you can see in above. But mksyscall_windows.go handle those as same. So the code made by mksyscall_windows.go are generated as pkgStd because IsStdRepo doesn't check trailing path separator as delimiter.

You keep repeating yourself. I understanding that you think there is a bug here. And I don't disagree with you. But I would like to see the bug by myself. Please provide some code or commands to demonstrate the bug. Show us some real computer output, and explain why that output is wrong in your opinion.

Thank you.

Alex

I checked github.com/tompng/pokemon-go package. It does not use mksyscall_windows.go. Why are you telling me about github.com/tompng/pokemon-go package?

Sorry much! I was confusing. True repository is my private for my job. Please check following code.

foo.go is below:

package foo

//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output bar.go foo.go

//sys   GetLastError() (lasterr error)

C:\dev\godev\src\github.com\mattn\foo>go generate

and go generate. bar.go is following.

// MACHINE GENERATED BY 'go generate' COMMAND; DO NOT EDIT

package foo

import (
    "internal/syscall/windows/sysdll"
    "syscall"
    "unsafe"
)

var _ unsafe.Pointer

var (
    modkernel32 = syscall.NewLazyDLL(sysdll.Add("kernel32.dll"))

    procGetLastError = modkernel32.NewProc("GetLastError")
)

func GetLastError() (lasterr error) {
    r0, _, _ := syscall.Syscall(procGetLastError.Addr(), 0, 0, 0, 0)
    if r0 != 0 {
        lasterr = syscall.Errno(r0)
    }
    return
}

internal/syscall/windows/sysdll should not be generated.

P.S. I must say sorry again.

Please check following code.

Thanks for the test.

Alex