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      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 }
     34