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* 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.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This file contains test cases for cgo with function pointer variables.
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package cgotest
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/*
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typedef int (*intFunc) ();
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int
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bridge_int_func(intFunc f)
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{
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return f();
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}
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int fortytwo()
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{
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return 42;
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}
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*/
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import "C"
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import "testing"
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func callBridge(f C.intFunc) int {
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return int(C.bridge_int_func(f))
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}
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func callCBridge(f C.intFunc) C.int {
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return C.bridge_int_func(f)
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}
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func testFpVar(t *testing.T) {
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const expected = 42
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f := C.intFunc(C.fortytwo)
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res1 := C.bridge_int_func(f)
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if r1 := int(res1); r1 != expected {
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t.Errorf("got %d, want %d", r1, expected)
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}
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res2 := callCBridge(f)
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if r2 := int(res2); r2 != expected {
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t.Errorf("got %d, want %d", r2, expected)
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}
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r3 := callBridge(f)
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if r3 != expected {
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t.Errorf("got %d, want %d", r3, expected)
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}
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}
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