Please answer these questions before submitting your issue. Thanks!

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

go version go1.10 windows/386

Does this issue reproduce with the latest release?

yes

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

set GOARCH=386
set GOBIN=
set GOCACHE=C:\Users\junwuhui\AppData\Local\go-build
set GOEXE=.exe
set GOHOSTARCH=386
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=C:\Users\junwuhui\go
set GORACE=
set GOROOT=C:\Go
set GOTMPDIR=
set GOTOOLDIR=C:\Go\pkg\tool\windows_386
set GCCGO=gccgo
set GO386=sse2
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m32 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\junwuhui\AppData\Local\Temp\go-build252696518=/tmp/go-build -gno-record-gcc-switches

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.

go get -u golang.org/x/vgo

What did you expect to see?

install vgo successful

What did you see instead?

syscall

C:\Go\src\syscall\ztypes_windows.go:9:36: ERROR_FILE_NOT_FOUND redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:9:36
C:\Go\src\syscall\ztypes_windows.go:10:36: ERROR_PATH_NOT_FOUND redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:10:36
C:\Go\src\syscall\ztypes_windows.go:11:36: ERROR_ACCESS_DENIED redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:11:36
C:\Go\src\syscall\ztypes_windows.go:12:36: ERROR_NO_MORE_FILES redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:12:36
C:\Go\src\syscall\ztypes_windows.go:13:36: ERROR_HANDLE_EOF redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:13:36
C:\Go\src\syscall\ztypes_windows.go:14:36: ERROR_NETNAME_DELETED redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:14:36
C:\Go\src\syscall\ztypes_windows.go:15:36: ERROR_FILE_EXISTS redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:15:36
C:\Go\src\syscall\ztypes_windows.go:16:36: ERROR_BROKEN_PIPE redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:16:36
C:\Go\src\syscall\ztypes_windows.go:17:36: ERROR_BUFFER_OVERFLOW redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:17:36
C:\Go\src\syscall\ztypes_windows.go:18:36: ERROR_INSUFFICIENT_BUFFER redeclared in this block
previous declaration at C:\Go\src\syscall\types_windows.go:18:36
C:\Go\src\syscall\ztypes_windows.go:18:36: too many errors