Try/catch in graph builder.

runtime/vm/compiler.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/compiler.h"
 
 #include "vm/assembler.h"
 #include "vm/ast_printer.h"
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 246 matching lines @@
       OS::Print("Pointer offsets for function: {\n");
       for (intptr_t i = 0; i < code.pointer_offsets_length(); i++) {
         const uword addr = code.GetPointerOffsetAt(i) + code.EntryPoint();
         Object& obj = Object::Handle();
         obj = *reinterpret_cast<RawObject**>(addr);
         OS::Print(" %d : 0x%x '%s'\n",
                   code.GetPointerOffsetAt(i), addr, obj.ToCString());
       }
       OS::Print("}\n");
       OS::Print("PC Descriptors for function '%s' {\n", function_fullname);
-      OS::Print("(pc, kind, id, try-index, token-index)\n");
+      OS::Print("(pc\t\tkind\tid\ttry-ix\ttoken-index)\n");
       const PcDescriptors& descriptors =
           PcDescriptors::Handle(code.pc_descriptors());
       OS::Print("%s", descriptors.ToCString());
       OS::Print("}\n");
       OS::Print("Variable Descriptors for function '%s' {\n",
                 function_fullname);
       const LocalVarDescriptors& var_descriptors =
           LocalVarDescriptors::Handle(code.var_descriptors());
       intptr_t var_desc_length =
           var_descriptors.IsNull() ? 0 : var_descriptors.Length();
@@ skipping 106 matching lines @@
   } else {
     result = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
   }
   isolate->set_long_jump_base(base);
   return result.raw();
 }
 
 
 }  // namespace dart