I've encountered the compilation error with this program with boost-libs-1.88.0: #include <boost/dll/import.hpp> #include <boost/shared_ptr.hpp> class API { public:        API() { } }; void x() {    boost::shared_ptr<API> pluginInterface;    pluginInterface = boost::dll::import_symbol<API>("path", "name"); } The error: $ c++ -std=c++20 -c s.cpp -I /usr/local/include/ s.cpp:13:21: error: no viable overloaded '='   13 |     pluginInterface = boost::dll::import_symbol<API>("path", "name");      |     ~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/local/include/boost/smart_ptr/shared_ptr.hpp:407:18: note: candidate function not viable: no known conversion from 'boost::dll::detail::import_type<API>' (aka 'st d::shared_ptr<API>') to 'const shared_ptr<API>' for 1st argument  407 |     shared_ptr & operator=( shared_ptr const & r ) noexcept      |                  ^          ~~~~~~~~~~~~~~~~~~~~ Compiler: clang-19, but gcc-12 fails in a similar way. It seems that such assignment should work. This error was originally found in the Dakota project (https://github.com/snl-dakota/dakota). This error prevents the Dakota project from compiling. Thanks, Yuri