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https://github.com/golang/go
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5a34472d74
Add a C.CBytes function to copy a Go byte slice into C memory. This returns an unsafe.Pointer, since that is what needs to be passed to C.free, and the data is often opaque bytes anyway. Fixes #14838 Change-Id: Ic7bc29637eb6f1f5ee409b3898c702a59833a85a Reviewed-on: https://go-review.googlesource.com/20762 Reviewed-by: Ian Lance Taylor <iant@golang.org>
38 lines
705 B
Go
38 lines
705 B
Go
// Copyright 2016 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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// Issue 14838. add CBytes function
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package cgotest
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/*
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#include <stdlib.h>
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int check_cbytes(char *b, size_t l) {
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int i;
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for (i = 0; i < l; i++) {
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if (b[i] != i) {
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return 0;
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}
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}
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return 1;
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}
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*/
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import "C"
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import (
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"testing"
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"unsafe"
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)
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func test14838(t *testing.T) {
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data := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
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cData := C.CBytes(data)
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defer C.free(cData)
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if C.check_cbytes((*C.char)(cData), C.size_t(len(data))) == 0 {
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t.Fatalf("mismatched data: expected %v, got %v", data, (*(*[10]byte)(unsafe.Pointer(cData)))[:])
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}
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}
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