1 files changed, 37 insertions, 0 deletions
diff --git a/test/fixedbugs/issue12108.go b/test/fixedbugs/issue12108.go
new file mode 100644
index 0000000..c7a7425
--- /dev/null
+++ b/test/fixedbugs/issue12108.go
@@ -0,0 +1,37 @@
+// run
+
+// 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.
+
+// A generated method with a return value large enough to be
+// initialized by duffzero is not a leaf method, which violated
+// assumptions made by cmd/internal/obj/ppc64.
+
+package main
+
+const N = 9 // values > 8 cause (Super).Method to use duffzero
+
+type Base struct {
+}
+
+func (b *Base) Method() (x [N]uintptr) {
+	return
+}
+
+type Super struct {
+	Base
+}
+
+type T interface {
+	Method() [N]uintptr
+}
+
+func f(q T) {
+	q.Method()
+}
+
+func main() {
+	var s Super
+	f(&s)
+}