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go/misc/cgo/test/checkconst.go

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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test a constant in conjunction with pointer checking.
package cgotest
/*
#include <stdlib.h>
#define CheckConstVal 0
typedef struct {
int *p;
} CheckConstStruct;
static void CheckConstFunc(CheckConstStruct *p, int e) {
}
*/
import "C"
import (
"testing"
"unsafe"
)
func testCheckConst(t *testing.T) {
// The test is that this compiles successfully.
p := C.malloc(C.size_t(unsafe.Sizeof(C.int(0))))
defer C.free(p)
C.CheckConstFunc(&C.CheckConstStruct{(*C.int)(p)}, C.CheckConstVal)
}