1 files changed, 30 insertions, 0 deletions
diff --git a/test/fixedbugs/issue23912.go b/test/fixedbugs/issue23912.go
new file mode 100644
index 0000000..05ffd6b
--- /dev/null
+++ b/test/fixedbugs/issue23912.go
@@ -0,0 +1,30 @@
+// 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.
+
+// A couple of aliases cases that gccgo incorrectly gave errors for.
+
+package p
+
+func F1() {
+	type E = struct{}
+	type X struct{}
+	var x X
+	var y E = x
+	_ = y
+}
+
+func F2() {
+	type E = struct{}
+	type S []E
+	type T []struct{}
+	type X struct{}
+	var x X
+	s := S{E{}}
+	t := T{struct{}{}}
+	_ = append(s, x)
+	_ = append(s, t[0])
+	_ = append(s, t...)
+}