1 files changed, 49 insertions, 0 deletions
diff --git a/test/fixedbugs/bug184.go b/test/fixedbugs/bug184.go
new file mode 100644
index 0000000..c084ea5
--- /dev/null
+++ b/test/fixedbugs/bug184.go
@@ -0,0 +1,49 @@
+// run
+
+// Copyright 2009 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 main
+
+import "fmt"
+
+type Buffer int
+
+func (*Buffer) Read() {}
+
+type Reader interface {
+	Read()
+}
+
+func f() *Buffer { return nil }
+
+func g() Reader {
+	// implicit interface conversion in assignment during return
+	return f()
+}
+
+func h() (b *Buffer, ok bool) { return }
+
+func i() (r Reader, ok bool) {
+	// implicit interface conversion in multi-assignment during return
+	return h()
+}
+
+func fmter() (s string, i int, t string) { return "%#x %q", 100, "hello" }
+
+func main() {
+	b := g()
+	bb, ok := b.(*Buffer)
+	_, _, _ = b, bb, ok
+
+	b, ok = i()
+	bb, ok = b.(*Buffer)
+	_, _, _ = b, bb, ok
+
+	s := fmt.Sprintf(fmter())
+	if s != "0x64 \"hello\"" {
+		println(s)
+		panic("fail")
+	}
+}