libgo/misc/cgo/test/issue14838.go

   1 // Copyright 2016 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // Issue 14838. add CBytes function
   6
   7 package cgotest
   8
   9 /*
  10 #include <stdlib.h>
  11
  12 int check_cbytes(char *b, size_t l) {
  13         int i;
  14         for (i = 0; i < l; i++) {
  15                 if (b[i] != i) {
  16                         return 0;
  17                 }
  18         }
  19         return 1;
  20 }
  21 */
  22 import "C"
  23
  24 import (
  25         "testing"
  26         "unsafe"
  27 )
  28
  29 func test14838(t *testing.T) {
  30         data := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
  31         cData := C.CBytes(data)
  32         defer C.free(cData)
  33
  34         if C.check_cbytes((*C.char)(cData), C.size_t(len(data))) == 0 {
  35                 t.Fatalf("mismatched data: expected %v, got %v", data, (*(*[10]byte)(unsafe.Pointer(cData)))[:])
  36         }
  37 }