Larger stack trace string in the minidump when catching Debug::Break crash.

src/debug.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1009 matching lines @@
         PutValuesOnStackAndDie(0xBEEEEEEE,
                                frame->fp(),
                                thread_local_.last_fp_,
                                reinterpret_cast<Address>(0xDEADDEAD),
                                count,
                                NULL,
                                0xCEEEEEEE);
       } else if (it.frame()->fp() != thread_local_.last_fp_) {
         // We crawled over last_fp_, without getting a match.
         Handle<String> stack = isolate_->StackTraceString();
-        char buffer[2048];
-        String::WriteToFlat(*stack, buffer, 0, 2047);
+        char buffer[8192];
+        String::WriteToFlat(*stack, buffer, 0, 8191);
         PutValuesOnStackAndDie(0xDEEEEEEE,
                                frame->fp(),
                                thread_local_.last_fp_,
                                it.frame()->fp(),
                                count,
                                buffer,
                                0xFEEEEEEE);
       }
 
       // If we found original frame
@@ skipping 2662 matching lines @@
     {
       Locker locker;
       Isolate::Current()->debugger()->CallMessageDispatchHandler();
     }
   }
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal