code review 13367051: cmd/gc: allow append and complex builtins to accept 2-r...

src/cmd/gc/order.c

 // Copyright 2012 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.
 
 // Rewrite tree to use separate statements to enforce
 // order of evaluation.  Makes walk easier, because it
 // can (after this runs) reorder at will within an expression.
 
 #include        <u.h>
 #include        <libc.h>
@@ skipping 326 matching lines @@
 ········
         case OANDAND:
         case OOROR:
                 orderexpr(&n->left, out);
                 orderexprinplace(&n->right);
                 break;
 ········
         case OCALLFUNC:
         case OCALLMETH:
         case OCALLINTER:
+        case OAPPEND:
+        case OCOMPLEX:
                 ordercall(n, out);
                 n = copyexpr(n, n->type, out);
                 break;
 
         case ORECV:
                 n = copyexpr(n, n->type, out);
                 break;
         }
 ········
         lineno = lno;
 
         *np = n;
 }