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29 lines
854 B
Go
29 lines
854 B
Go
// Copyright (c) 2012-2020 Ugorji Nwoke. All rights reserved.
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// Use of this source code is governed by a MIT license found in the LICENSE file.
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//go:build go1.20 && !safe && !codec.safe && !appengine
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// +build go1.20,!safe,!codec.safe,!appengine
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package codec
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import (
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_ "reflect" // needed for go linkname(s)
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"unsafe"
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)
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func growslice(typ unsafe.Pointer, old unsafeSlice, num int) (s unsafeSlice) {
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// culled from GOROOT/runtime/slice.go
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num -= old.Cap - old.Len
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s = rtgrowslice(old.Data, old.Cap+num, old.Cap, num, typ)
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s.Len = old.Len
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return
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}
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//go:linkname rtgrowslice runtime.growslice
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//go:noescape
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func rtgrowslice(oldPtr unsafe.Pointer, newLen, oldCap, num int, typ unsafe.Pointer) unsafeSlice
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// //go:linkname growslice reflect.growslice
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// //go:noescape
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// func growslice(typ unsafe.Pointer, old unsafeSlice, cap int) unsafeSlice
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