unix: use unsafe.Slice in (*FileHandle).Bytes

tklauser · gopherbot · commit f11e5e49a4ec · 2022-09-28T14:01:12.000Z
Change-Id: Ic2b88577ec6fd975bbba0538790d2ff312d85d3f Reviewed-on: https://go-review.googlesource.com/c/sys/+/435776 Reviewed-by: Benny Siegert <bsiegert@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
diff --git a/unix/syscall_linux.go b/unix/syscall_linux.go
@@ -2252,7 +2252,7 @@ func (fh *FileHandle) Bytes() []byte {
 	if n == 0 {
 		return nil
 	}
-	return (*[1 << 30]byte)(unsafe.Pointer(uintptr(unsafe.Pointer(&fh.fileHandle.Type)) + 4))[:n:n]
+	return unsafe.Slice((*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(&fh.fileHandle.Type))+4)), n)
 }
 
 // NameToHandleAt wraps the name_to_handle_at system call; it obtains

Original file line number	Diff line number	Diff line change
`@@ -2252,7 +2252,7 @@ func (fh *FileHandle) Bytes() []byte {`
`2252`	`2252`	`if n == 0 {`
`2253`	`2253`	`return nil`
`2254`	`2254`	`}`
`2255`		`- return (*[1 << 30]byte)(unsafe.Pointer(uintptr(unsafe.Pointer(&fh.fileHandle.Type)) + 4))[:n:n]`
	`2255`	`+ return unsafe.Slice((*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(&fh.fileHandle.Type))+4)), n)`
`2256`	`2256`	`}`
`2257`	`2257`
`2258`	`2258`	`// NameToHandleAt wraps the name_to_handle_at system call; it obtains`