blob: 777104e512209892d4fa856d9d791ad972dc9a35 [file] [log] [blame]
// 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.
// Issue 17537. The void* cast introduced by cgo to avoid problems
// with const/volatile qualifiers breaks C preprocessor macros that
// emulate functions.
package cgotest
#include <stdlib.h>
typedef struct {
int i;
} S17537;
int I17537(S17537 *p);
#define I17537(p) ((p)->i)
// Calling this function used to fail without the cast.
const int F17537(const char **p) {
return **p;
// Calling this function used to trigger an error from the C compiler
// (issue 18298).
void F18298(const void *const *p) {
// Test that conversions between typedefs work as they used to.
typedef const void *T18298_1;
struct S18298 { int i; };
typedef const struct S18298 *T18298_2;
void G18298(T18298_1 t) {
import "C"
import "testing"
func test17537(t *testing.T) {
v := C.S17537{i: 17537}
if got, want := C.I17537(&v),; got != want {
t.Errorf("got %d, want %d", got, want)
p := (*C.char)(C.malloc(1))
*p = 17
if got, want := C.F17537(&p),; got != want {
t.Errorf("got %d, want %d", got, want)
var v18298 C.T18298_2