address sanitize dumps error

[yuwenyong]

I'm using Boost 1.65. It seems newer version has the same problem. Even the first example has the same problem.
I compile my code with -fsanitize=address -fsanitize=undefined options. When run the application it will dump errors listed below but not crash:

/usr/local/include/boost/smart_ptr/detail/shared_count.hpp:426:36: runtime error: member call on address 0x6030000134b0 which does not point to an object of type 'sp_counted_base' 0x6030000134b0: note: object is of type 'boost::detail::sp_counted_impl_p<boost::log::v2_mt_posix::core>' 03 00 80 6a 40 2a 4f fb b6 7f 00 00 05 00 00 00 01 00 00 00 b0 ed 00 00 20 60 00 00 00 00 00 00 ^~~~~~~~~~~~~~~~~~~~~~~ vptr for 'boost::detail::sp_counted_impl_p<boost::log::v2_mt_posix::core>' /usr/local/include/boost/log/attributes/attribute_value.hpp:200:37: runtime error: member call on address 0x60400000cad0 which does not point to an object of type 'impl' 0x60400000cad0: note: object is of type 'boost::log::v2_mt_posix::attributes::attribute_value_impl<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >' 01 00 00 43 88 2a 4f fb b6 7f 00 00 01 00 00 00 be be be be b0 22 01 00 30 60 00 00 1d 00 00 00 ^~~~~~~~~~~~~~~~~~~~~~~ vptr for 'boost::log::v2_mt_posix::attributes::attribute_value_impl<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >'

[Lastique]

This is a false positive because in both cases the pointer is to a base class and the object is of a derived class.

[yuwenyong]

@Lastique Then how to solve it to avoid displaying these messages

[Lastique]

I'm not familiar with sanitizers and don't know if you can selectively disable that message. If not, just disable the sanitizer.

Also, I would recommend reporting this to your compiler vendor.

[yuwenyong]

OK. But even the hello world example dumps these errors. And it is not wise to disable asan. Hope this problem will be solved in the future.

Sorry, providing a little bit more information:I'm using GCC 5.4