Imported Upstream version 1.2upstream/1.2

1 files changed, 50 insertions, 0 deletions

diff --git a/misc/cgo/test/fpvar.go b/misc/cgo/test/fpvar.go
new file mode 100644
index 000000000..c0ec6f68d
--- /dev/null
+++ b/misc/cgo/test/fpvar.go
@@ -0,0 +1,50 @@
+// 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)
+	}
+}