gc: do not allow slice of array literal

R=ken2
CC=golang-dev
https://golang.org/cl/5440083

1 files changed, 24 insertions, 0 deletions

diff --git a/test/complit1.go b/test/complit1.go
new file mode 100644
index 0000000000..23b3bbd192
--- /dev/null
+++ b/test/complit1.go
@@ -0,0 +1,24 @@
+// errchk $G -e $D/$F.go
+
+// 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.
+
+package main
+
+var m map[int][3]int
+func f() [3]int
+
+func fp() *[3]int
+var mp map[int]*[3]int
+
+var (
+	_ = [3]int{1,2,3}[:]  // ERROR "slice of unaddressable value"
+	_ = m[0][:]  // ERROR "slice of unaddressable value"
+	_ = f()[:]  // ERROR "slice of unaddressable value"
+	
+	// these are okay because they are slicing a pointer to an array
+	_ = (&[3]int{1,2,3})[:]
+	_ = mp[0][:]
+	_ = fp()[:]
+)
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