Fix restoring of async try context in catch clause (issue 23498).

runtime/vm/parser.cc

 // 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.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/ast_transformer.h"
 #include "vm/bootstrap.h"
@@ skipping 9252 matching lines @@
     SequenceNode* async_code = new(Z) SequenceNode(handler_pos, NULL);
     const TryStack* try_block = try_stack_->outer_try();
     if (try_block != NULL) {
       LocalScope* scope = try_block->try_block()->scope;
       if (scope->function_level() == current_block_->scope->function_level()) {
         LocalVariable* saved_try_ctx =
             LookupSavedTryContextVar(scope->parent());
         LocalVariable* async_saved_try_ctx =
             LookupAsyncSavedTryContextVar(scope->parent(),
                                           try_block->try_index());
-        current_block_->statements->Add(
+        async_code->Add(
             new (Z) StoreLocalNode(
                 Scanner::kNoSourcePos,
                 saved_try_ctx,
                 new (Z) LoadLocalNode(Scanner::kNoSourcePos,
                                       async_saved_try_ctx)));
       }
     }
     SaveExceptionAndStacktrace(async_code,
                                exception_var,
                                stack_trace_var,
@@ skipping 4196 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart