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1b169ee7e2
Currently dereferencing an empty shared_ptr prints a complicated internal type in the assertion message: include/bits/shared_ptr_base.h:1377: std::__shared_ptr_access<_Tp, _Lp, <anonymous>, <anonymous> >::element_type& std::__shared_ptr_access<_Tp, _Lp, <anonymous>, <anonymous> >::operator*() const [with _Tp = std::filesystem::__cxx11::recursive_directory_iterator::_Dir_stack; __gnu_cxx::_Lock_policy _Lp = __gnu_cxx::_S_atomic; bool <anonymous> = false; bool <anonymous> = false; element_type = std::filesystem::__cxx11::recursive_directory_iterator::_Dir_stack]: Assertion '_M_get() != nullptr' failed. Users don't care about any of the _Lp and <anonymous> template parameters, so this is unnecessarily verbose. We can simplify it to something that only mentions "shared_ptr_deref" and the element type: include/bits/shared_ptr_base.h:1371: _Tp* std::__shared_ptr_deref(_Tp*) [with _Tp = filesystem::__cxx11::recursive_directory_iterator::_Dir_stack]: Assertion '__p != nullptr' failed. libstdc++-v3/ChangeLog: * include/bits/shared_ptr_base.h (__shared_ptr_deref): New function template. (__shared_ptr_access, __shared_ptr_access<>): Use it. |
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