https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83906
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> --- type = std::unique_ptr<std::vector<std::unique_ptr<std::list<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >>[]>>[99]>^M got: type = std::unique_ptr<std::vector<std::unique_ptr<std::list<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >>[]>>[99]>^M FAIL: libstdc++-prettyprinters/80276.cc whatis p4