if the typestring gives a field name of "?", drop it.

R=rsc
DELTA=11  (7 added, 0 deleted, 4 changed)
OCL=20988
CL=20988

src/lib/reflect/all_test.go

@@ -118,7 +118,7 @@ export func TestAll(tt *testing.T) {	// TODO(r): wrap up better
 	typedump("*chan<-string", "*chan<-string");
 	typedump("struct {c *chan *int32; d float32}", "struct{c *chan*int32; d float32}");
 	typedump("*(a int8, b int32)", "*(a int8, b int32)");
-	typedump("struct {c *(? *chan *P.integer, ? *int8)}", "struct{c *(? *chan*P.integer, ? *int8)}");
+	typedump("struct {c *(? *chan *P.integer, ? *int8)}", "struct{c *(*chan*P.integer, *int8)}");
 	typedump("struct {a int8; b int32}", "struct{a int8; b int32}");
 	typedump("struct {a int8; b int8; b int32}", "struct{a int8; b int8; b int32}");
 	typedump("struct {a int8; b int8; c int8; b int32}", "struct{a int8; b int8; c int8; b int32}");
@@ -149,7 +149,7 @@ export func TestAll(tt *testing.T) {	// TODO(r): wrap up better
 	valuedump("*chan<-string", "*chan<-string(0)");
 	valuedump("struct {c *chan *int32; d float32}", "struct{c *chan*int32; d float32}{*chan*int32(0), 0}");
 	valuedump("*(a int8, b int32)", "*(a int8, b int32)(0)");
-	valuedump("struct {c *(? *chan *P.integer, ? *int8)}", "struct{c *(? *chan*P.integer, ? *int8)}{*(? *chan*P.integer, ? *int8)(0)}");
+	valuedump("struct {c *(? *chan *P.integer, ? *int8)}", "struct{c *(*chan*P.integer, *int8)}{*(*chan*P.integer, *int8)(0)}");
 	valuedump("struct {a int8; b int32}", "struct{a int8; b int32}{0, 0}");
 	valuedump("struct {a int8; b int8; b int32}", "struct{a int8; b int8; b int32}{0, 0, 0}");
 

src/lib/reflect/tostring.go

@@ -47,7 +47,10 @@ func TypeFieldsToString(t HasFields, sep string) string {
 	var str string;
 	for i := 0; i < t.Len(); i++ {
 		str1, typ, tag, offset := t.Field(i);
-		str1 +=  " " + TypeToString(typ, false);
+		if str1 != "" {
+			str1 += " "
+		}
+		str1 += TypeToString(typ, false);
 		if tag != "" {
 			str1 += " " + DoubleQuote(tag);
 		}

src/lib/reflect/type.go

@@ -690,7 +690,11 @@ func (p *Parser) Fields(sep, term string) *[]Field {
 			}
 			a = a1;
 		}
-		a[nf].name = p.token;
+		name := p.token;
+		if name == "?" {	// used to represent a missing name
+			name = ""
+		}
+		a[nf].name = name;
 		p.Next();
 		a[nf].typ = p.Type("");
 		if p.token != "" && p.token[0] == '"' {