From 1dcdbc321f72399ac60b17ff382ead9eaadb2bc8 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Mon, 5 Sep 2011 15:31:22 -0400
Subject: gc: fix zero-length struct eval

Fixes issue 2232.

R=ken2
CC=golang-dev
http://codereview.appspot.com/4960054
---
 test/struct0.go | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 test/struct0.go

(limited to 'test/struct0.go')

diff --git a/test/struct0.go b/test/struct0.go
new file mode 100644
index 000000000..2398c4117
--- /dev/null
+++ b/test/struct0.go
@@ -0,0 +1,34 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// Copyright 2011 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.
+
+// zero length structs.
+// used to not be evaluated.
+// issue 2232.
+
+package main
+
+func recv(c chan interface{}) struct{} {
+	return (<-c).(struct{})
+}
+
+var m = make(map[interface{}]int)
+
+func recv1(c chan interface{}) {
+	defer rec()
+	m[(<-c).(struct{})] = 0
+}
+
+func rec() {
+	recover()
+}
+
+func main() {
+	c := make(chan interface{})
+	go recv(c)
+	c <- struct{}{}
+	go recv1(c)
+	c <- struct{}{}
+}
-- 
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