cmd/compile: fix -race nit

Fixes #13264.

Change-Id: I74b941164610921a03814733fea08631f18b6178
Reviewed-on: https://go-review.googlesource.com/17815
Reviewed-by: Ian Lance Taylor <iant@golang.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/runtime/race/testdata/issue13264_test.go b/src/runtime/race/testdata/issue13264_test.go
new file mode 100644
index 0000000000..d42290de50
--- /dev/null
+++ b/src/runtime/race/testdata/issue13264_test.go
@@ -0,0 +1,13 @@
+// Copyright 2015 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 race_test
+
+// golang.org/issue/13264
+// The test is that this compiles at all.
+
+func issue13264() {
+	for ; ; []map[int]int{}[0][0] = 0 {
+	}
+}