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

runtime/vm/flow_graph_compiler.h

 // 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.
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #define VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
@@ skipping 386 matching lines @@
 
   // Returns true if there is a next block after the current one in
   // the block order and if it is the given block.
   bool CanFallThroughTo(BlockEntryInstr* block_entry) const;
 
   void AddExceptionHandler(intptr_t try_index,
                            intptr_t outer_try_index,
                            intptr_t pc_offset,
                            const Array& handler_types,
                            bool needs_stacktrace);
+  void SetNeedsStacktrace(intptr_t try_index);
   void AddCurrentDescriptor(PcDescriptors::Kind kind,
                             intptr_t deopt_id,
                             intptr_t token_pos);
 
   void RecordSafepoint(LocationSummary* locs);
 
   Label* AddDeoptStub(intptr_t deopt_id, DeoptReasonId reason);
 
   void AddDeoptIndexAtCall(intptr_t deopt_id, intptr_t token_pos);
 
@@ skipping 186 matching lines @@
   // that should be used when deoptimizing we store it in this variable.
   // In future AddDeoptStub should be moved out of the instruction template.
   Environment* pending_deoptimization_env_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_