print(map) and print(chan) as pointers.

R=ken
OCL=23520
CL=23520

src/cmd/gc/sys.go

@@ -16,7 +16,7 @@ func	printbool(bool);
 func	printfloat(float64);
 func	printint(int64);
 func	printstring(string);
-func	printpointer(*any);
+func	printpointer(any);
 func	printinter(any);
 func	printarray(any);
 func	printnl();

src/cmd/gc/sysimport.c

@@ -8,7 +8,7 @@ char *sysimport =
 	"func sys.printfloat (? float64)\n"
 	"func sys.printint (? int64)\n"
 	"func sys.printstring (? string)\n"
-	"func sys.printpointer (? *any)\n"
+	"func sys.printpointer (? any)\n"
 	"func sys.printinter (? any)\n"
 	"func sys.printarray (? any)\n"
 	"func sys.printnl ()\n"

src/cmd/gc/walk.c

@@ -1983,9 +1983,9 @@ loop:
 			argtype(on, l->type);		// any-1
 			break;
 		}
-		if(isptr[l->type->etype]) {
+		if(isptr[l->type->etype] || l->type->etype == TCHAN || l->type->etype == TMAP) {
 			on = syslook("printpointer", 1);
-			argtype(on, l->type->type);	// any-1
+			argtype(on, l->type);	// any-1
 			break;
 		}
 		if(isslice(l->type)) {
@@ -1993,7 +1993,7 @@ loop:
 			argtype(on, l->type);	// any-1
 			break;
 		}
-		badtype(n->op, l->type, T);
+		badtype(OPRINT, l->type, T);
 		l = listnext(&save);
 		goto loop;