mlippautz@google.com 56f63abc4f Reland: Fix scoping async functions.
This CL fixes several scoping/context issues:
* Do not reuse scopes in SequenceNode_s as they might introduce a new context
  level. In that case we would trigger context allocationg multiple times
  resulting in scope/contexts being out of sync.
* Properly save and restore saved_try_context in try/catch/finally blocks and
  nesting closures. For this we need to keep track of async closures top scopes.

Updated version of https://codereview.chromium.org/520223002/

BUG=
R=hausner@google.com, srdjan@google.com

Review URL: https://codereview.chromium.org//530313002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39810 260f80e4-7a28-3924-810f-c04153c831b5
2014-09-03 16:34:00 +00:00
2014-09-03 14:55:32 +00:00
2014-09-02 18:23:44 +00:00
2013-08-21 11:02:39 +00:00
2014-08-27 08:52:38 +00:00
2014-03-12 23:09:53 +00:00

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