1 files changed, 17 insertions, 0 deletions
diff --git a/test/fixedbugs/issue23780.go b/test/fixedbugs/issue23780.go
new file mode 100644
index 0000000..71fc2d9
--- /dev/null
+++ b/test/fixedbugs/issue23780.go
@@ -0,0 +1,17 @@
+// compile
+
+// Copyright 2018 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 p
+
+func f() {
+	_ = []byte{1 << 30: 1}
+}
+
+func g() {
+	sink = []byte{1 << 30: 1}
+}
+
+var sink []byte