If a rethrow is encountered in the catch block, then its handler must be marked that it needs stack…

runtime/vm/intermediate_language.h

 // Copyright (c) 2013, 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 1968 matching lines @@
 
  private:
   const intptr_t token_pos_;
 
   DISALLOW_COPY_AND_ASSIGN(ThrowInstr);
 };
 
 
 class ReThrowInstr : public TemplateInstruction<0> {
  public:
-  explicit ReThrowInstr(intptr_t token_pos) : token_pos_(token_pos) { }
+  // 'cacth_try_index' can be CatchClauseNode::kInvalidTryIndex if the

[Ivan Posva, 2013/08/31 00:06:23]

cactus?

[srdjan, 2013/08/31 00:18:06]

Done.

+  // rethrow has been artifically generated by the parser.
+  ReThrowInstr(intptr_t token_pos, intptr_t catch_try_index)
+      : token_pos_(token_pos), catch_try_index_(catch_try_index) {}
 
   DECLARE_INSTRUCTION(ReThrow)
 
   virtual intptr_t ArgumentCount() const { return 2; }
 
   intptr_t token_pos() const { return token_pos_; }
+  intptr_t catch_try_index() const { return catch_try_index_; }
 
   virtual bool CanDeoptimize() const { return true; }
 
   virtual EffectSet Effects() const { return EffectSet::None(); }
 
   virtual bool MayThrow() const { return true; }
 
  private:
   const intptr_t token_pos_;
+  const intptr_t catch_try_index_;
 
   DISALLOW_COPY_AND_ASSIGN(ReThrowInstr);
 };
 
 
 class GotoInstr : public TemplateInstruction<0> {
  public:
   explicit GotoInstr(JoinEntryInstr* entry)
     : successor_(entry),
       edge_weight_(0.0),
@@ skipping 4771 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_