Preparsing now considers catch-blocks as inside a with.

src/preparser.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 732 matching lines @@
 
   // In preparsing, allow any number of catch/finally blocks, including zero
   // of both.
 
   Expect(i::Token::TRY, CHECK_OK);
 
   ParseBlock(CHECK_OK);
 
   bool catch_or_finally_seen = false;
   if (peek() == i::Token::CATCH) {
-    Expect(i::Token::CATCH, CHECK_OK);
+    Consume(i::Token::CATCH);
     Expect(i::Token::LPAREN, CHECK_OK);
     ParseIdentifier(CHECK_OK);
     Expect(i::Token::RPAREN, CHECK_OK);
+    scope_->EnterWith();
+    ParseBlock(ok);
+    scope_->LeaveWith();
+    if (!*ok) return kUnknownStatement;
+    catch_or_finally_seen = true;
+  }
+  if (peek() == i::Token::FINALLY) {
+    Consume(i::Token::FINALLY);
     ParseBlock(CHECK_OK);
     catch_or_finally_seen = true;
   }
-  if (peek() == i::Token::FINALLY) {
-    Expect(i::Token::FINALLY, CHECK_OK);
-    ParseBlock(CHECK_OK);
-    catch_or_finally_seen = true;
-  }
   if (!catch_or_finally_seen) {
     *ok = false;
   }
   return kUnknownStatement;
 }
 
 
 template <typename Scanner, typename Log>
 Statement PreParser<Scanner, Log>::ParseDebuggerStatement(bool* ok) {
   // In ECMA-262 'debugger' is defined as a reserved keyword. In some browser
@@ skipping 631 matching lines @@
     *is_get = strncmp(token, "get", 3) == 0;
     *is_set = !*is_get && strncmp(token, "set", 3) == 0;
   }
   return GetIdentifierSymbol();
 }
 
 #undef CHECK_OK
 } }  // v8::preparser
 
 #endif  // V8_PREPARSER_H