diff --git a/test/fixedbugs/bug508.go b/test/fixedbugs/bug508.go
new file mode 100644
index 00000000000..69b1adaf959
--- /dev/null
+++ b/test/fixedbugs/bug508.go
@@ -0,0 +1,14 @@
+// compile
+
+// Copyright 2020 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.
+
+// Gccgo mishandles composite literals of map with type bool.
+
+package p
+
+var M = map[bool]uint8{
+	false: 0,
+	true: 1,
+}