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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | golang.org/x/crypto | require | minor | `v0.14.0` -> `v0.27.0` | --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOC4yMS4yIiwidXBkYXRlZEluVmVyIjoiMzguMjEuMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==--> Reviewed-on: #6 Co-authored-by: Renovate Bot <renovate@keks.cloud> Co-committed-by: Renovate Bot <renovate@keks.cloud>
31 lines
1.1 KiB
Go
31 lines
1.1 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !purego
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// Package alias implements memory aliasing tests.
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package alias
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import "unsafe"
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// AnyOverlap reports whether x and y share memory at any (not necessarily
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// corresponding) index. The memory beyond the slice length is ignored.
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func AnyOverlap(x, y []byte) bool {
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return len(x) > 0 && len(y) > 0 &&
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uintptr(unsafe.Pointer(&x[0])) <= uintptr(unsafe.Pointer(&y[len(y)-1])) &&
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uintptr(unsafe.Pointer(&y[0])) <= uintptr(unsafe.Pointer(&x[len(x)-1]))
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}
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// InexactOverlap reports whether x and y share memory at any non-corresponding
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// index. The memory beyond the slice length is ignored. Note that x and y can
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// have different lengths and still not have any inexact overlap.
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//
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// InexactOverlap can be used to implement the requirements of the crypto/cipher
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// AEAD, Block, BlockMode and Stream interfaces.
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func InexactOverlap(x, y []byte) bool {
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if len(x) == 0 || len(y) == 0 || &x[0] == &y[0] {
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return false
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}
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return AnyOverlap(x, y)
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}
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