diff --git a/test/bugs/bug047.go b/test/bugs/bug047.go
new file mode 100644
index 00000000000..a5beae5b744
--- /dev/null
+++ b/test/bugs/bug047.go
@@ -0,0 +1,21 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// 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
+
+func main() {
+
+	type T struct {
+		s string;
+		f float;
+	};
+	var s string = "hello";
+	var f float = 0.2;
+	t := T(s, f);
+
+	type M map[int] int;
+	m0 := M(7 , 8);
+}
diff --git a/test/bugs/bug048.go b/test/bugs/bug048.go
new file mode 100644
index 00000000000..0dfbaae9ad9
--- /dev/null
+++ b/test/bugs/bug048.go
@@ -0,0 +1,13 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// 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
+
+func main() {
+	type M map[int] int;
+	m0 := M(7 , 8);	// parses OK
+	m1 := M(7 : 8);	// BUG: syntax error
+}
diff --git a/test/golden.out b/test/golden.out
index 8845e16eaf4..5c6b17b5d48 100644
--- a/test/golden.out
+++ b/test/golden.out
@@ -225,6 +225,23 @@ BUG: known to fail incorrectly
 bugs/bug046.go:7: illegal <this> pointer
 BUG: known to fail incorrectly
 
+=========== bugs/bug047.go
+bugs/bug047.go:13: illegal types for operand: CONV
+	(<T>{<s><string>*STRING;<f><float32>FLOAT32;})
+bugs/bug047.go:16: illegal types for operand: CONV
+	(MAP[<int32>INT32]<int32>INT32)
+bugs/bug047.go:13: illegal types for operand: CONV
+	(<T>{<s><string>*STRING;<f><float32>FLOAT32;})
+bugs/bug047.go:16: illegal types for operand: CONV
+	(MAP[<int32>INT32]<int32>INT32)
+BUG: known to fail incorrectly
+
+=========== bugs/bug048.go
+bugs/bug048.go:7: illegal types for operand: CONV
+	(MAP[<int32>INT32]<int32>INT32)
+bugs/bug048.go:8: syntax error
+BUG: known to fail incorrectly
+
 =========== fixedbugs/bug000.go
 
 =========== fixedbugs/bug001.go