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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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11
tun/wintun/guid/guid_windows.go
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@@ -12,7 +12,7 @@ import (
"golang.org/x/sys/windows"
)
//sys clsidFromString(lpsz *uint16, pclsid *windows.GUID) (hr int32) = ole32.CLSIDFromString
//sys clsidFromString(lpsz *uint16, pclsid *windows.GUID) (err error) [failretval!=0] = ole32.CLSIDFromString
//
// FromString parses "{XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}" string to GUID.
@@ -22,14 +22,11 @@ func FromString(str string) (*windows.GUID, error) {
if err != nil {
return nil, err
}
guid := &windows.GUID{}
hr := clsidFromString(strUTF16, guid)
if hr < 0 {
return nil, syscall.Errno(hr)
err = clsidFromString(strUTF16, guid)
if err != nil {
return nil, err
}
return guid, nil
}