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windows, unix: fix wrong unsafe.Pointer alignment in syscall

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Same as CL 201877 did for package syscall.

Updates golang/go#34972

Change-Id: I3929841ab32378516edafb1f02a84b1bdcc77bbd
Reviewed-on: https://go-review.googlesource.com/c/sys/+/202177
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Tobias Klauser
2019-10-20 15:20:52 +00:00
committed by Tobias Klauser
parent 727590c500
commit 9984515f05
5 changed files with 7 additions and 5 deletions
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windows/security_windows.go
+3 -1
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@@ -229,13 +229,15 @@ func LookupSID(system, account string) (sid *SID, domain string, accType uint32,
// String converts SID to a string format suitable for display, storage, or transmission.
func (sid *SID) String() string {
// From https://docs.microsoft.com/en-us/windows/win32/secbiomet/general-constants
const SecurityMaxSidSize = 68
var s *uint16
e := ConvertSidToStringSid(sid, &s)
if e != nil {
return ""
}
defer LocalFree((Handle)(unsafe.Pointer(s)))
return UTF16ToString((*[(1 << 30) - 1]uint16)(unsafe.Pointer(s))[:])
return UTF16ToString((*[SecurityMaxSidSize]uint16)(unsafe.Pointer(s))[:])
}
// Len returns the length, in bytes, of a valid security identifier SID.