Bug #3727
Updated by Junxiao Shi about 8 years ago
Environment: Ubuntu 16.04, ndn-cxx:commit:5a67310e89e02f1f5290901b57637e86b7d00104 16.04 64-bit, ndn-cxx commit `750472b63d7df6254540356bb09647132b1e3104`. Snippet to reproduce: ``` // g++ -o x -std=c++0x x.cpp $(pkg-config --cflags --libs libndn-cxx) ==16535==ERROR: AddressSanitizer: heap-use-after-free on address 0x604000011a28 at pc 0x0000004d9b03 bp 0x7ffe8f70a160 sp 0x7ffe8f70a150 #include <ndn-cxx/encoding/buffer-stream.hpp> int main() { ndn::OBufferStream os; os << '1'; return 0; } ``` Valgrind output: ``` ==3515== Invalid read READ of size 4 ==3515== 8 at 0x804C081: 0x604000011a28 thread T0 #0 0x4d9b02 in void std::vector<unsigned char, std::allocator<unsigned char> >::emplace_back<unsigned char>(unsigned char&&) (in /code/x) ==3515== by 0x804B957: /usr/include/c++/5/bits/vector.tcc:94 #1 0x4daa06 in std::vector<unsigned char, std::allocator<unsigned char> >::push_back(unsigned char&&) (in /code/x) ==3515== by 0x804B264: /usr/include/c++/5/bits/stl_vector.h:932 #2 0x4daa06 in std::back_insert_iterator<ndn::Buffer>::operator=(unsigned char&&) (in /code/x) ==3515== by 0x804AF2A: /usr/include/c++/5/bits/stl_iterator.h:458 #3 0x4daa06 in std::back_insert_iterator<ndn::Buffer> std::__copy_move<false, false, std::random_access_iterator_tag>::__copy_m<char const*, std::back_insert_iterator<ndn::Buffer> >(char const*, char const*, std::back_insert_iterator<ndn::Buffer>) (in /code/x) ==3515== by 0x804ACC9: /usr/include/c++/5/bits/stl_algobase.h:340 #4 0x4daa06 in std::back_insert_iterator<ndn::Buffer> std::__copy_move_a<false, char const*, std::back_insert_iterator<ndn::Buffer> >(char const*, char const*, std::back_insert_iterator<ndn::Buffer>) (in /code/x) ==3515== by 0x804A8BE: /usr/include/c++/5/bits/stl_algobase.h:402 #5 0x4daa06 in std::back_insert_iterator<ndn::Buffer> std::__copy_move_a2<false, char const*, std::back_insert_iterator<ndn::Buffer> >(char const*, char const*, std::back_insert_iterator<ndn::Buffer>) (in /code/x) ==3515== by 0x804A470: /usr/include/c++/5/bits/stl_algobase.h:440 #6 0x4daa06 in std::back_insert_iterator<ndn::Buffer> std::copy<char const*, std::back_insert_iterator<ndn::Buffer> >(char const*, char const*, std::back_insert_iterator<ndn::Buffer>) (in /code/x) ==3515== by 0x804A0DF: /usr/include/c++/5/bits/stl_algobase.h:472 #7 0x4daa06 in ndn::iostreams::buffer_append_device::write(char const*, int) (in /code/x) ==3515== by 0x804CE57: int long) /home/davide/ndn-cxx/src/encoding/buffer-stream.hpp:53 #8 0x4daa06 in long boost::iostreams::detail::write_device_impl<boost::iostreams::output>::write<ndn::iostreams::buffer_append_device>(ndn::iostreams::buffer_append_device&, boost::iostreams::char_type_of<ndn::iostreams::buffer_append_device>::type const*, int) (in /code/x) ==3515== by 0x804CD95: int long) /usr/include/boost/iostreams/write.hpp:121 #9 0x4daa06 in long boost::iostreams::write<ndn::iostreams::buffer_append_device>(ndn::iostreams::buffer_append_device&, boost::iostreams::char_type_of<ndn::iostreams::buffer_append_device>::type const*, int) (in /code/x) ==3515== by 0x804CC9B: int long) /usr/include/boost/iostreams/write.hpp:53 #10 0x4daa06 in long boost::iostreams::detail::device_wrapper_impl<boost::iostreams::output>::write<ndn::iostreams::buffer_append_device, boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(ndn::iostreams::buffer_append_device&, boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >*, boost::iostreams::char_type_of<ndn::iostreams::buffer_append_device>::type const*, int) (in /code/x) ==3515== by 0x804CA0B: int long) /usr/include/boost/iostreams/detail/adapter/concept_adapter.hpp:194 #11 0x4daa06 in long boost::iostreams::detail::concept_adapter<ndn::iostreams::buffer_append_device>::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(char const*, int, long, boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >*) (in /code/x) ==3515== /usr/include/boost/iostreams/detail/adapter/concept_adapter.hpp:85 #12 0x4daa06 in boost::iostreams::detail::indirect_streambuf<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, boost::iostreams::output>::sync_impl() /usr/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp:394 #13 0x4dadf0 in boost::iostreams::detail::indirect_streambuf<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, boost::iostreams::output>::sync() /usr/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp:314 #14 0x4d9e13 in boost::iostreams::detail::indirect_streambuf<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, boost::iostreams::output>::close_impl(std::_Ios_Openmode) /usr/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp:377 #15 0x4d9e13 in boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >::close(std::_Ios_Openmode) /usr/include/boost/iostreams/detail/streambuf/linked_streambuf.hpp:82 #16 0x4d9e13 in boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >::operator()() const /usr/include/boost/iostreams/detail/functional.hpp:116 #17 0x4d9e13 in boost::iostreams::detail::execute_traits<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::result_of<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > ()>::type>::result_type boost::iostreams::detail::execute_all<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >) /usr/include/boost/preprocessor/iteration/detail/local.hpp:37 #18 0x4d9e13 in boost::iostreams::detail::execute_traits<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::result_of<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > ()>::type>::result_type boost::iostreams::detail::execute_all<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::reset_operation<boost::iostreams::detail::optional<boost::iostreams::detail::concept_adapter<ndn::iostreams::buffer_append_device> > > >(boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::reset_operation<boost::iostreams::detail::optional<boost::iostreams::detail::concept_adapter<ndn::iostreams::buffer_append_device> > >) /usr/include/boost/preprocessor/iteration/detail/local.hpp:40 #19 0x4d9e13 in boost::iostreams::detail::execute_traits<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::result_of<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > ()>::type>::result_type boost::iostreams::detail::execute_all<boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::reset_operation<boost::iostreams::detail::optional<boost::iostreams::detail::concept_adapter<ndn::iostreams::buffer_append_device> > >, boost::iostreams::detail::clear_flags_operation<int> >(boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::member_close_operation<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >, boost::iostreams::detail::reset_operation<boost::iostreams::detail::optional<boost::iostreams::detail::concept_adapter<ndn::iostreams::buffer_append_device> > >, boost::iostreams::detail::clear_flags_operation<int>) /usr/include/boost/preprocessor/iteration/detail/local.hpp:43 #20 0x4d9e13 in boost::iostreams::detail::indirect_streambuf<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, boost::iostreams::output>::close() /usr/include/boost/iostreams/detail/streambuf/indirect_streambuf.hpp:204 #21 0x8f8e55 in boost::iostreams::stream_buffer<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, boost::iostreams::output>::~stream_buffer() /usr/include/boost/iostreams/stream_buffer.hpp:91 #22 0x8f8e55 in boost::base_from_member<boost::iostreams::stream_buffer<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, boost::iostreams::output>, 0>::~base_from_member() /usr/include/boost/utility/base_from_member.hpp:124 #23 0x8f8e55 in boost::iostreams::detail::stream_base<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char>, std::ostream>::~stream_base() /usr/include/boost/iostreams/stream.hpp:74 #24 0x8f8e55 in boost::iostreams::stream<ndn::iostreams::buffer_append_device, std::char_traits<char>, std::allocator<char> >::~stream() /usr/include/boost/iostreams/stream.hpp:112 #25 0x8f8e55 in ndn::OBufferStream::~OBufferStream() /home/davide/ndn-cxx/src/encoding/buffer-stream.hpp:79 #26 0x8f8e55 in ndn::security::transform::tests::Security::Transform::TestHexDecode::OddByte::test_method() ../tests/unit-tests/security/transform/hex-decode.t.cpp:270 #27 0x8f9c2b in OddByte_invoker ../tests/unit-tests/security/transform/hex-decode.t.cpp:266 #28 0x4c9bea in boost::unit_test::ut_detail::unused boost::unit_test::ut_detail::invoker<boost::unit_test::ut_detail::unused>::invoke<void (*)()>(void (*&)()) /usr/include/boost/test/utils/callback.hpp:56 #29 0x4c9bea in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke() /usr/include/boost/test/utils/callback.hpp:89 #30 0x7fd7bdacacb0 Address 0x4409a68 (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x6acb0) #31 0x7fd7bdaaa995 in boost::execution_monitor::catch_signals(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x4a995) #32 0x7fd7bdaab1b2 in boost::execution_monitor::execute(boost::unit_test::callback0<int> const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x4b1b2) #33 0x7fd7bdacade1 in boost::unit_test::unit_test_monitor_t::execute_and_translate(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x6ade1) #34 0x7fd7bdab209d in boost::unit_test::framework_impl::visit(boost::unit_test::test_case const&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x5209d) #35 0x7fd7bdae84ca in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x884ca) #36 0x7fd7bdae84ca in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x884ca) #37 0x7fd7bdae84ca in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x884ca) #38 0x7fd7bdae84ca in boost::unit_test::traverse_test_tree(boost::unit_test::test_suite const&, boost::unit_test::test_tree_visitor&) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x884ca) #39 0x7fd7bdaad9f5 in boost::unit_test::framework::run(unsigned long, bool) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x4d9f5) #40 0x7fd7bdac9286 in boost::unit_test::unit_test_main(bool (*)(), int, char**) (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x69286) #41 0x7fd7bc61382f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) #42 0x4b2898 in _start (/home/davide/ndn-cxx/build/unit-tests+0x4b2898) 0x604000011a28 is 16 located 24 bytes inside a block of size 24 free'd 40-byte region [0x604000011a10,0x604000011a38) ==3515== at 0x402E7B8: freed by thread T0 here: #0 0x7fd7bf3b9b2a in operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==3515== by 0x804C910: __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> >::deallocate(std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2>*, unsigned int) (in /code/x) ==3515== by 0x804C13B: std::allocator_traits<std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> > >::deallocate(std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> >&, std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2>*, unsigned int) (in /code/x) ==3515== by 0x804B9E2: std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> > >::~__allocated_ptr() (in /code/x) ==3515== by 0x804D280: std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2>::_M_destroy() (in /code/x) ==3515== by 0x804A9B9: (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x99b2a) #1 0x8f93e0 in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() (in /code/x) ==3515== by 0x804A52E: /usr/include/c++/5/bits/shared_ptr_base.h:167 #2 0x8f93e0 in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() (in /code/x) ==3515== by 0x804A10E: /usr/include/c++/5/bits/shared_ptr_base.h:659 #3 0x8f93e0 in std::__shared_ptr<ndn::Buffer, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() (in /code/x) ==3515== by 0x804A127: /usr/include/c++/5/bits/shared_ptr_base.h:925 #4 0x8f93e0 in std::shared_ptr<ndn::Buffer>::~shared_ptr() (in /code/x) ==3515== by 0x804CFE3: /usr/include/c++/5/bits/shared_ptr.h:93 #5 0x8f93e0 in ndn::OBufferStream::~OBufferStream() (in /code/x) ==3515== /home/davide/ndn-cxx/src/encoding/buffer-stream.hpp:79 #6 0x8f93e0 in ndn::security::transform::tests::Security::Transform::TestHexDecode::OddByte::test_method() ../tests/unit-tests/security/transform/hex-decode.t.cpp:270 #7 0x8f9c2b in OddByte_invoker ../tests/unit-tests/security/transform/hex-decode.t.cpp:266 #8 0x4c9bea in boost::unit_test::ut_detail::unused boost::unit_test::ut_detail::invoker<boost::unit_test::ut_detail::unused>::invoke<void (*)()>(void (*&)()) /usr/include/boost/test/utils/callback.hpp:56 #9 0x4c9bea in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke() /usr/include/boost/test/utils/callback.hpp:89 #10 0x7fd7bdacacb0 (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x6acb0) #11 0x60300002661f (<unknown module>) previously allocated by 0x8049B9A: main (in /code/x) ==3515== Block was alloc'd at ==3515== at 0x402D6BC: thread T0 here: #0 0x7fd7bf3b9532 in operator new(unsigned int) (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so) ==3515== by 0x804C8F9: long) (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x99532) #1 0x8f8381 in __gnu_cxx::new_allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> >::allocate(unsigned int, long, void const*) (in /code/x) ==3515== by 0x804C107: /usr/include/c++/5/ext/new_allocator.h:104 #2 0x8f8381 in std::allocator_traits<std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> > >::allocate(std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> >&, unsigned int) (in /code/x) ==3515== by 0x804B99F: long) /usr/include/c++/5/bits/alloc_traits.h:491 #3 0x8f8381 in std::__allocated_ptr<std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> > > std::__allocate_guarded<std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> > >(std::allocator<std::_Sp_counted_ptr_inplace<ndn::Buffer, std::allocator<ndn::Buffer>, (__gnu_cxx::_Lock_policy)2> >&) (in /code/x) ==3515== by 0x804B2CE: /usr/include/c++/5/bits/allocated_ptr.h:102 #4 0x8f8381 in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::__shared_count<ndn::Buffer, std::allocator<ndn::Buffer>>(std::_Sp_make_shared_tag, ndn::Buffer*, std::allocator<ndn::Buffer> const&) (in /code/x) ==3515== by 0x804AF88: /usr/include/c++/5/bits/shared_ptr_base.h:615 #5 0x8f8381 in std::__shared_ptr<ndn::Buffer, (__gnu_cxx::_Lock_policy)2>::__shared_ptr<std::allocator<ndn::Buffer>>(std::_Sp_make_shared_tag, std::allocator<ndn::Buffer> const&) (in /code/x) ==3515== by 0x804AD07: /usr/include/c++/5/bits/shared_ptr_base.h:1097 #6 0x8f8381 in std::shared_ptr<ndn::Buffer>::shared_ptr<std::allocator<ndn::Buffer>>(std::_Sp_make_shared_tag, std::allocator<ndn::Buffer> const&) (in /code/x) ==3515== by 0x804A938: /usr/include/c++/5/bits/shared_ptr.h:319 #7 0x8f8381 in std::shared_ptr<ndn::Buffer> std::allocate_shared<ndn::Buffer, std::allocator<ndn::Buffer>>(std::allocator<ndn::Buffer> const&) (in /code/x) ==3515== by 0x804A4C5: /usr/include/c++/5/bits/shared_ptr.h:620 #8 0x8f8381 in std::shared_ptr<ndn::Buffer> std::make_shared<ndn::Buffer>() (in /code/x) /usr/include/c++/5/bits/shared_ptr.h:636 #9 0x8f8381 in ndn::OBufferStream::OBufferStream() /home/davide/ndn-cxx/src/encoding/buffer-stream.hpp:87 #10 0x8f8381 in ndn::security::transform::tests::Security::Transform::TestHexDecode::OddByte::test_method() ../tests/unit-tests/security/transform/hex-decode.t.cpp:270 #11 0x8f9c2b in OddByte_invoker ../tests/unit-tests/security/transform/hex-decode.t.cpp:266 #12 0x4c9bea in boost::unit_test::ut_detail::unused boost::unit_test::ut_detail::invoker<boost::unit_test::ut_detail::unused>::invoke<void (*)()>(void (*&)()) /usr/include/boost/test/utils/callback.hpp:56 #13 0x4c9bea in boost::unit_test::ut_detail::callback0_impl_t<boost::unit_test::ut_detail::unused, void (*)()>::invoke() /usr/include/boost/test/utils/callback.hpp:89 #14 0x7fd7bdacacb0 (/usr/lib/x86_64-linux-gnu/libboost_unit_test_framework.so.1.58.0+0x6acb0) #15 0x60300002661f (<unknown module>) SUMMARY: AddressSanitizer: heap-use-after-free /usr/include/c++/5/bits/vector.tcc:94 void std::vector<unsigned char, std::allocator<unsigned char> >::emplace_back<unsigned char>(unsigned char&&) ==3515== Shadow bytes around the buggy address: 0x0c087fffa2f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c087fffa300: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c087fffa310: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c087fffa320: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c087fffa330: fa fa fa fa fa fa fa fa fa fa fd fd fd fd fd fa =>0x0c087fffa340: fa fa fd fd fd[fd]fd fa fa fa 00 00 00 00 00 00 0x0c087fffa350: fa fa 00 00 00 00 00 00 fa fa 00 00 00 00 00 00 0x0c087fffa360: fa fa 00 00 00 00 00 00 fa fa 00 00 00 00 00 00 0x0c087fffa370: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa 0x0c087fffa380: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa 0x0c087fffa390: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fa Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Heap right redzone: fb Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack partial redzone: f4 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: by 0x804A2A8: ndn::OBufferStream::OBufferStream() (in /code/x) bb ASan internal: fe ==3515== by 0x8049B6F: main (in /code/x) ==16535==ABORTING ```