libgo/misc/cgo/test/checkconst.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 // Test a constant in conjunction with pointer checking.
   6
   7 package cgotest
   8
   9 /*
  10 #include <stdlib.h>
  11
  12 #define CheckConstVal 0
  13
  14 typedef struct {
  15         int *p;
  16 } CheckConstStruct;
  17
  18 static void CheckConstFunc(CheckConstStruct *p, int e) {
  19 }
  20 */
  21 import "C"
  22
  23 import (
  24         "testing"
  25         "unsafe"
  26 )
  27
  28 func testCheckConst(t *testing.T) {
  29         // The test is that this compiles successfully.
  30         p := C.malloc(C.size_t(unsafe.Sizeof(C.int(0))))
  31         defer C.free(p)
  32         C.CheckConstFunc(&C.CheckConstStruct{(*C.int)(p)}, C.CheckConstVal)
  33 }