Fix a long-standing bug in the computation of the live environments for bailouts. When visiting a l…

frog/tests/leg_only/src/BailoutTest.dart

 // Copyright (c) 2012, 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.
 
 var myString;
 
 void ifBailout(test) {
   if (test) {
     // Share the same variable for the type inference.
     var o = myString;
@@ skipping 24 matching lines @@
   var n = myString.length;
   var res = '';
   for (int i = 0; i < n; i++) {
     var o = myString;
     if (false) o[1] = 2;
     res += o[i];
   }
   return res;
 }
 
+void forInBailout() {
+  var n = myString.length;
+  var res = '';
+  for (int i in myString.charCodes()) {
+    var o = myString;
+    if (false) o[1] = 2;
+    res += new String.fromCharCodes([i]);
+  }
+  return res;
+}
+
 void innerForBailout() {
   var n = myString.length;
   var res = '';
   for (int i = 0; i < 2; i++) {
     for (int j = 0; j < n; j++) {
       var o = myString;
       if (false) o[1] = 2;
       res += o[j];
     }
   }
@@ skipping 130 matching lines @@
 main() {
   myString = '1';
   Expect.equals('1 no bailout', ifBailout(false));
   Expect.equals('1 bailout', ifBailout(true));
 
   Expect.equals('1 else bailout', ifElseBailout(false));
   Expect.equals('1 if bailout', ifElseBailout(true));
 
   myString = '1234';
   Expect.equals('1234', forBailout());
+  Expect.equals('1234', forInBailout());
   Expect.equals('12341234', innerForBailout());
 
   Expect.equals('1234', whileBailout());
   Expect.equals('1234', doWhileBailout());
 
   Expect.equals(102334155, fibonacci(40));
 
   phiBailout();
   ifPhiBailout1(1);
   ifPhiBailout1(2);
   ifPhiBailout2(1);
   ifPhiBailout2(2);
 }