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setupapi: safer aliasing of slice types

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This commit is contained in:
Jason A. Donenfeld
2019-05-03 09:34:00 +02:00
parent 2e988467c2
commit 81ca08f1b3
5 changed files with 40 additions and 23 deletions
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12
tun/wintun/guid/zguid_windows.go
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@@ -42,8 +42,14 @@ var (
procCLSIDFromString = modole32.NewProc("CLSIDFromString")
)
func clsidFromString(lpsz *uint16, pclsid *windows.GUID) (hr int32) {
r0, _, _ := syscall.Syscall(procCLSIDFromString.Addr(), 2, uintptr(unsafe.Pointer(lpsz)), uintptr(unsafe.Pointer(pclsid)), 0)
hr = int32(r0)
func clsidFromString(lpsz *uint16, pclsid *windows.GUID) (err error) {
r1, _, e1 := syscall.Syscall(procCLSIDFromString.Addr(), 2, uintptr(unsafe.Pointer(lpsz)), uintptr(unsafe.Pointer(pclsid)), 0)
if r1 != 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}