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% PATH=$NUPATH gdb --args node_g test/integration/instrumentation-restify.tap.js
GNU gdb 6.3.50-20050815 (Apple version gdb-1824) (Wed Feb  6 22:51:23 UTC 2013)
Copyright 2004 Free Software Foundation, Inc.
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries ... done

(gdb) run
Starting program: /Users/forrest/Documents/projects/node-git/node_g test/integration/instrumentation-restify.tap.js
Reading symbols for shared libraries ++.............................. done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
0x000000010064c12f in v8::internal::ExternalUnsignedByteArray::get_scalar (this=0x70c52e51ce9, index=0) at objects-inl.h:3245
3245    return ptr[index];
(gdb) thread apply all bt

Thread 6 (process 80847):
#0  0x00007fff86ca86c2 in semaphore_wait_trap ()
#1  0x00000001007bb940 in v8::internal::MacOSSemaphore::Wait (this=0x101609650) at ../deps/v8/src/platform-macos.cc:415
#2  0x00000001006ac52b in v8::internal::SweeperThread::Run (this=0x101609390) at ../deps/v8/src/sweeper-thread.cc:64
#3  0x00000001007be870 in v8::internal::Thread::NotifyStartedAndRun (this=0x101609390) at platform.h:702
#4  0x00000001007bd4d6 in v8::internal::ThreadEntry (arg=0x101609390) at ../deps/v8/src/platform-posix.cc:590
#5  0x00007fff899ab772 in _pthread_start ()
#6  0x00007fff899981a1 in thread_start ()

Thread 5 (process 80847):
#0  0x00007fff86ca86c2 in semaphore_wait_trap ()
#1  0x00000001007bb940 in v8::internal::MacOSSemaphore::Wait (this=0x101608e60) at ../deps/v8/src/platform-macos.cc:415
#2  0x00000001006ac52b in v8::internal::SweeperThread::Run (this=0x101608bb0) at ../deps/v8/src/sweeper-thread.cc:64
#3  0x00000001007be870 in v8::internal::Thread::NotifyStartedAndRun (this=0x101608bb0) at platform.h:702
#4  0x00000001007bd4d6 in v8::internal::ThreadEntry (arg=0x101608bb0) at ../deps/v8/src/platform-posix.cc:590
#5  0x00007fff899ab772 in _pthread_start ()
#6  0x00007fff899981a1 in thread_start ()

Thread 4 (process 80847):
#0  0x00007fff86ca86c2 in semaphore_wait_trap ()
#1  0x00000001007bb940 in v8::internal::MacOSSemaphore::Wait (this=0x1016083c0) at ../deps/v8/src/platform-macos.cc:415
#2  0x00000001006ac52b in v8::internal::SweeperThread::Run (this=0x1016084f0) at ../deps/v8/src/sweeper-thread.cc:64
#3  0x00000001007be870 in v8::internal::Thread::NotifyStartedAndRun (this=0x1016084f0) at platform.h:702
#4  0x00000001007bd4d6 in v8::internal::ThreadEntry (arg=0x1016084f0) at ../deps/v8/src/platform-posix.cc:590
#5  0x00007fff899ab772 in _pthread_start ()
#6  0x00007fff899981a1 in thread_start ()

Thread 3 (process 80847):
#0  0x00007fff86ca86c2 in semaphore_wait_trap ()
#1  0x00000001007bb940 in v8::internal::MacOSSemaphore::Wait (this=0x101607880) at ../deps/v8/src/platform-macos.cc:415
#2  0x00000001006ac52b in v8::internal::SweeperThread::Run (this=0x101607c10) at ../deps/v8/src/sweeper-thread.cc:64
#3  0x00000001007be870 in v8::internal::Thread::NotifyStartedAndRun (this=0x101607c10) at platform.h:702
#4  0x00000001007bd4d6 in v8::internal::ThreadEntry (arg=0x101607c10) at ../deps/v8/src/platform-posix.cc:590
#5  0x00007fff899ab772 in _pthread_start ()
#6  0x00007fff899981a1 in thread_start ()

Thread 2 (process 80847):
#0  0x00007fff86ca86c2 in semaphore_wait_trap ()
#1  0x00000001007bb940 in v8::internal::MacOSSemaphore::Wait (this=0x101603be0) at ../deps/v8/src/platform-macos.cc:415
#2  0x0000000100571aeb in v8::internal::OptimizingCompilerThread::Run (this=0x10180ba40) at ../deps/v8/src/optimizing-compiler-thread.cc:55
#3  0x00000001007be870 in v8::internal::Thread::NotifyStartedAndRun (this=0x10180ba40) at platform.h:702
#4  0x00000001007bd4d6 in v8::internal::ThreadEntry (arg=0x10180ba40) at ../deps/v8/src/platform-posix.cc:590
#5  0x00007fff899ab772 in _pthread_start ()
#6  0x00007fff899981a1 in thread_start ()

Thread 1 (process 80847):
#0  0x000000010064c12f in v8::internal::ExternalUnsignedByteArray::get_scalar (this=0x70c52e51ce9, index=0) at objects-inl.h:3245
#1  0x0000000100331e9b in v8::internal::ExternalUnsignedByteArray::get (this=0x70c52e51ce9, index=0) at objects-inl.h:3250
#2  0x0000000100331e48 in v8::internal::ExternalElementsAccessor<v8::internal::ExternalUnsignedByteElementsAccessor, (v8::internal::ElementsKind)9>::GetImpl (receiver=0x70c52e51c31, obj=0x70c52e51c31, key=0, backing_store=0x70c52e51ce9) at ../deps/v8/src/elements.cc:1351
#3  0x0000000100331603 in v8::internal::ElementsAccessorBase<v8::internal::ExternalUnsignedByteElementsAccessor, v8::internal::ElementsKindTraits<(v8::internal::ElementsKind)9> >::Get (this=0x101603f80, receiver=0x70c52e51c31, holder=0x70c52e51c31, key=0, backing_store=0x70c52e51ce9) at ../deps/v8/src/elements.cc:645
#4  0x0000000100503a8d in v8::internal::Object::GetElementWithReceiver (this=0x70c52e51c31, receiver=0x70c52e51c31, index=0) at ../deps/v8/src/objects.cc:948
#5  0x000000010054627a in v8::internal::Object::GetElement (this=0x70c52e51c31, index=0) at objects-inl.h:925
#6  0x00000001005cee51 in v8::internal::Runtime::GetElementOrCharAt (isolate=0x101803200, object={location_ = 0x7fff5fbfe500}, index=0) at ../deps/v8/src/runtime.cc:4734
#7  0x00000001005cf488 in v8::internal::Runtime::GetObjectProperty (isolate=0x101803200, object={location_ = 0x7fff5fbfe500}, key={location_ = 0x7fff5fbfe4f8}) at ../deps/v8/src/runtime.cc:4788
#8  0x00000001005cf10d in v8::internal::Runtime::GetObjectPropertyOrFail (isolate=0x101803200, object={location_ = 0x7fff5fbfe500}, key={location_ = 0x7fff5fbfe4f8}) at ../deps/v8/src/runtime.cc:4768
#9  0x00000001004736d5 in v8::internal::KeyedLoadIC::Load (this=0x7fff5fbfe420, state=v8::internal::UNINITIALIZED, object={location_ = 0x7fff5fbfe500}, key={location_ = 0x7fff5fbfe4f8}, miss_mode=v8::internal::MISS) at ../deps/v8/src/ic.cc:1517
#10 0x0000000100477bf7 in v8::internal::__RT_impl_KeyedLoadIC_Miss (args={<v8::internal::Embedded> = {<No data fields>}, length_ = 2, arguments_ = 0x7fff5fbfe500}, isolate=0x101803200) at ../deps/v8/src/ic.cc:2286
#11 0x0000000100477ae6 in v8::internal::KeyedLoadIC_Miss (args_length=2, args_object=0x7fff5fbfe500, isolate=0x101803200) at ../deps/v8/src/ic.cc:2281
#12 0x00001248fdb072ce in ?? ()
#13 0x00001248fdbe9656 in ?? ()
#14 0x00001248fdbe9c65 in ?? ()
#15 0x00001248fdb2ebdb in ?? ()
#16 0x00001248fdb75591 in ?? ()
#17 0x00001248fdb70185 in ?? ()
#18 0x00001248fdb6c133 in ?? ()
#19 0x00001248fdb5d102 in ?? ()
#20 0x00001248fdb108f4 in ?? ()
#21 0x00001248fdb76196 in ?? ()
#22 0x00001248fdb76029 in ?? ()
#23 0x00001248fdbbad17 in ?? ()
#24 0x00001248fdb2ebdb in ?? ()
#25 0x00001248fdb75591 in ?? ()
#26 0x00001248fdb70185 in ?? ()
#27 0x00001248fdb6c133 in ?? ()
#28 0x00001248fdb5d102 in ?? ()
#29 0x00001248fdb108f4 in ?? ()
#30 0x00001248fdb76196 in ?? ()
#31 0x00001248fdb76029 in ?? ()
#32 0x00001248fdbb6999 in ?? ()
#33 0x00001248fdb2ebdb in ?? ()
#34 0x00001248fdb75591 in ?? ()
#35 0x00001248fdb70185 in ?? ()
#36 0x00001248fdb6c133 in ?? ()
#37 0x00001248fdb5d102 in ?? ()
#38 0x00001248fdb108f4 in ?? ()
#39 0x00001248fdb76196 in ?? ()
#40 0x00001248fdb76029 in ?? ()
#41 0x00001248fdb75c9b in ?? ()
#42 0x00001248fdb2ebdb in ?? ()
#43 0x00001248fdb75591 in ?? ()
#44 0x00001248fdb70185 in ?? ()
#45 0x00001248fdb6c133 in ?? ()
#46 0x00001248fdb5d102 in ?? ()
#47 0x00001248fdb5cacb in ?? ()
#48 0x00001248fdb39998 in ?? ()
#49 0x00001248fdb38aae in ?? ()
#50 0x00001248fdb2aee4 in ?? ()
#51 0x00001248fdb17e97 in ?? ()
#52 0x0000000100341b78 in v8::internal::Invoke (is_construct=false, function={location_ = 0x101857720}, receiver={location_ = 0x101857728}, argc=1, args=0x7fff5fbff490, has_pending_exception=0x7fff5fbff3af) at ../deps/v8/src/execution.cc:119
#53 0x0000000100341634 in v8::internal::Execution::Call (callable={location_ = 0x101857720}, receiver={location_ = 0x101857728}, argc=1, argv=0x7fff5fbff490, pending_exception=0x7fff5fbff3af, convert_receiver=false) at ../deps/v8/src/execution.cc:182
#54 0x0000000100264013 in v8::Function::Call (this=0x101857720, recv={val_ = 0x101857728}, argc=1, argv=0x7fff5fbff490) at ../deps/v8/src/api.cc:4387
#55 0x00000001000164d6 in node::Load (env=0x101606b60) at ../src/node.cc:2552
#56 0x0000000100017a75 in node::CreateEnvironment (isolate=0x101803200, argc=2, argv=0x101603d40, exec_argc=0, exec_argv=0x101603e80) at ../src/node.cc:3209
#57 0x0000000100017b67 in node::Start (argc=2, argv=0x101603d40) at ../src/node.cc:3237
#58 0x000000010003b472 in main (argc=2, argv=0x7fff5fbff768) at ../src/node_main.cc:65