goroutine 54 [syscall, locked to thread]:
syscall.Syscall(0x77689050, 0x2, 0x92c, 0xffffffff, 0x0, 0x0, 0x0, 0x0)
C:/go-build/Go/src/runtime/syscall_windows.go:172 +0xcf
syscall.WaitForSingleObject(0x92c, 0xffffffff, 0x0, 0x0, 0x0)
C:/go-build/Go/src/syscall/zsyscall_windows.go:737 +0x53
os.(*Process).wait(0x2e936930, 0x0, 0x0, 0x0)
C:/go-build/Go/src/os/exec_windows.go:18 +0x5a
os.(*Process).Wait(0x2e936930, 0x2e820600, 0x0, 0x0)
C:/go-build/Go/src/os/exec.go:125 +0x21
os/exec.(*Cmd).Wait(0x2ebc8210, 0xb6bea8, 0x0)
C:/go-build/Go/src/os/exec/exec.go:465 +0x43
GoProxy/utils/shell.RunCmdWithTimeout.func5(0x2ebc8210, 0x2e92605c, 0x2eb0e1c0, 0x2eba3d00, 0x2eb8a000, 0x24)
D:/gseeproxy/src/GoProxy/utils/shell/shell.go:204 +0x43
created by GoProxy/utils/shell.RunCmdWithTimeout
D:/gseeproxy/src/GoProxy/utils/shell/shell.go:198 +0x7f4
eax 0xffffffff
ebx 0x0
ecx 0x30
edx 0x0
edi 0x24
esi 0x1
ebp 0xffffffff
esp 0x0
eip 0x77e47594
eflags 0x0
cs 0x0
fs 0x14f63580
gs 0xbfd70d2f

This kind of crash will happen if you pass bad arguments, such as invalid pointers, to the Windows system call. There's no particular reason to think that it is a problem with Go. Different versions of Windows act differently.

If you are convinced that this is a bug with Go, we'll need a way to reproduce the problem ourselves.

@ianlancetaylor MSG is new i don't where invalid pointers?The problem has been hotly discussed. But it seems that the real reason has not been found, and I have this problem again.

https://github.com/lxn/walk/pull/493#issue-274104188
lxn/walk#483

type MSG struct { HWnd HWND Message uint32 WParam uintptr LParam uintptr Time uint32 Pt POINT }
` msg := (*win.MSG)(unsafe.Pointer(win.GlobalAlloc(0, unsafe.Sizeof(win.MSG{}))))
defer win.GlobalFree(win.HGLOBAL(unsafe.Pointer(msg)))

for fb.hWnd != 0 {
	switch win.GetMessage(msg, 0, 0, 0) {
	case 0:
		return int(msg.WParam)

	case -1:
		return -1
	}`

The code you show isn't valid Go, but, more importantly, the MSG structure doesn't have the lPrivate field. Perhaps the structure is too small.

@ianlancetaylor I tried to add lprivate. The problem is still that this is not the cause.
winuser.h
`/*

• Message structure
  */
  typedef struct tagMSG {
  HWND hwnd;
  UINT message;
  WPARAM wParam;
  LPARAM lParam;
  DWORD time;
  POINT pt;
  #ifdef _MAC
  DWORD lPrivate;
  #endif
  } MSG, *PMSG, NEAR *NPMSG, FAR *LPMSG;`

In order to help you, we'll need a way to reproduce this problem ourselves.

No reproducer or news for almost a year, I think we can close here.