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
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