mirror of
https://github.com/golang/go
synced 2024-11-27 03:41:22 -07:00
c18dc11ef2
* Add a new kind of Name, "fpvar" which stands for function pointer variable * When walking the AST, find functions used as expressions and create a new Name object for them * Track functions which are only used in expr contexts, and avoid generating bridge code for them R=golang-dev, minux.ma, fullung, rsc, iant CC=golang-dev https://golang.org/cl/9835047
51 lines
934 B
Go
51 lines
934 B
Go
// Copyright 2013 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.
|
|
|
|
// This file contains test cases for cgo with function pointer variables.
|
|
|
|
package cgotest
|
|
|
|
/*
|
|
typedef int (*intFunc) ();
|
|
|
|
int
|
|
bridge_int_func(intFunc f)
|
|
{
|
|
return f();
|
|
}
|
|
|
|
int fortytwo()
|
|
{
|
|
return 42;
|
|
}
|
|
|
|
*/
|
|
import "C"
|
|
import "testing"
|
|
|
|
func callBridge(f C.intFunc) int {
|
|
return int(C.bridge_int_func(f))
|
|
}
|
|
|
|
func callCBridge(f C.intFunc) C.int {
|
|
return C.bridge_int_func(f)
|
|
}
|
|
|
|
func testFpVar(t *testing.T) {
|
|
const expected = 42
|
|
f := C.intFunc(C.fortytwo)
|
|
res1 := C.bridge_int_func(f)
|
|
if r1 := int(res1); r1 != expected {
|
|
t.Errorf("got %d, want %d", r1, expected)
|
|
}
|
|
res2 := callCBridge(f)
|
|
if r2 := int(res2); r2 != expected {
|
|
t.Errorf("got %d, want %d", r2, expected)
|
|
}
|
|
r3 := callBridge(f)
|
|
if r3 != expected {
|
|
t.Errorf("got %d, want %d", r3, expected)
|
|
}
|
|
}
|