cmd/cgo: for typedef of untagged struct, use typedef name in C code

Fixes issue 8148.

LGTM=cookieo9, rsc
R=rsc, cookieo9
CC=golang-codereviews
https://codereview.appspot.com/103080043

1 files changed, 31 insertions, 0 deletions

diff --git a/misc/cgo/test/issue8148.go b/misc/cgo/test/issue8148.go
new file mode 100644
index 000000000..8e4190848
--- /dev/null
+++ b/misc/cgo/test/issue8148.go
@@ -0,0 +1,31 @@
+// Copyright 2014 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 8148.  A typedef of an unnamed struct didn't work when used
+// with an exported Go function.  No runtime test; just make sure it
+// compiles.
+
+package cgotest
+
+/*
+typedef struct { int i; } T;
+
+int issue8148Callback(T*);
+
+static int get() {
+	T t;
+	t.i = 42;
+	return issue8148Callback(&t);
+}
+*/
+import "C"
+
+//export issue8148Callback
+func issue8148Callback(t *C.T) C.int {
+	return t.i
+}
+
+func Issue8148() int {
+	return int(C.get())
+}