closure calls (just the invocation part).

frog/leg/leg.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('leg');
 
 #import('io/io.dart', prefix: 'io');
 
 #import('elements/elements.dart');
 #import('scanner/scannerlib.dart');
 #import('scanner/scanner_implementation.dart');
 #import('ssa/ssa.dart');
 #import('tree/tree.dart');
 #import('util/util.dart');
 
 #source('compiler.dart');
 #source('resolver.dart');
 #source('script.dart');
 #source('tree_validator.dart');
 #source('typechecker.dart');
 #source('universe.dart');
 #source('warnings.dart');
 #source('emitter.dart');
 #source('namer.dart');
 
 final bool GENERATE_SSA_TRACE = false;
 
-void unreachable() {
-  throw const Exception("Internal Error (Leg): UNREACHABLE");
+void unreachable([msg = "UNREACHABLE"]) {

[kasperl, 2012/01/05 07:01:52]

msg -> message

[floitsch, 2012/01/05 12:18:38]

Done.

[ngeoffray, 2012/01/05 14:05:46]

Since we'll get rid of this method, I suggest you don't change it, but instead
use the compiler error reporting methods. The other uses of unreachable can stay
around for now, but we need to change them.

[floitsch, 2012/01/24 13:28:37]

Done.

+  throw new Exception("Internal Error (Leg): $msg");
 }