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https://github.com/golang/go
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23 lines
458 B
Go
23 lines
458 B
Go
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// compile
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// Copyright 2023 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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package main
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import (
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"fmt"
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"reflect"
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"unsafe"
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)
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var slice = []byte{'H', 'e', 'l', 'l', 'o', ','}
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func main() {
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ptr := uintptr(unsafe.Pointer(&slice)) + 100
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header := (*reflect.SliceHeader)(unsafe.Pointer(ptr))
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header.Data += 1
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fmt.Printf("%d %d\n", cap(slice), header.Cap)
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}
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