‘<unnamed>.toml::detail::region::last_’ may be used uninitialized #267
Description
I have ran into a problem while converting to the 4.0.0 API.
Given:
#include <toml.hpp>
int main() {
auto toml_data = toml::parse("./input.toml");
std::vector<std::string> files = toml::get<std::vector<std::string>>(toml_data["files"]);
toml::format(toml::value(toml::table{{"files", files}}));
return 0;
}I cannot compile with: g++ -O2 -Werror -Wuninitialized ./main.cpp
I am getting the following error:
In file included from /usr/include/toml11/region.hpp:4,
from /usr/include/toml11/fwd/source_location_fwd.hpp:4,
from /usr/include/toml11/source_location.hpp:4,
from /usr/include/toml11/fwd/error_info_fwd.hpp:4,
from /usr/include/toml11/error_info.hpp:4,
from /usr/include/toml11/context.hpp:4,
from /usr/include/toml.hpp:30,
from ./main.cpp:1:
In constructor ‘toml::detail::region::region(toml::detail::region&&)’,
inlined from ‘toml::basic_value<TypeConcig>::basic_value(string_type, toml::string_format_info, std::vector<std::__cxx11::basic_string<char> >, region_type) [with TypeConfig = toml::type_config]’ at /usr/include/toml11/value.hpp:562:11,
inlined from ‘toml::basic_value<TypeConcig>::basic_value(string_type) [with TypeConfig = toml::type_config]’ at /usr/include/toml11/value.hpp:548:100,
inlined from ‘void std::_Construct(_Tp*, _Args&& ...) [with _Tp = toml::basic_value<toml::type_config>; _Args = {__cxx11::basic_string<char, char_traits<char>, allocator<char> >}]’ at /usr/include/c++/14/bits/stl_construct.h:119:7,
inlined from ‘_ForwardIterator std::__do_uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = move_iterator<__gnu_cxx::__normal_iterator<__cxx11::basic_string<char>*, vector<__cxx11::basic_string<char> > > >; _ForwardIterator = toml::basic_value<toml::type_config>*]’ at /usr/include/c++/14/bits/stl_uninitialized.h:120:21:
/usr/include/toml11/fwd/region_fwd.hpp:49:5: error: ‘<unnamed>.toml::detail::region::first_’ may be used uninitialized [-Werror=maybe-uninitialized]
49 | region(region&&) = default;
| ^~~~~~
In file included from /usr/include/toml11/types.hpp:8,
from /usr/include/toml11/get.hpp:7,
from /usr/include/toml11/find.hpp:6,
from /usr/include/toml11/conversion.hpp:4,
from /usr/include/toml.hpp:31:
/usr/include/toml11/value.hpp: In function ‘_ForwardIterator std::__do_uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = move_iterator<__gnu_cxx::__normal_iterator<__cxx11::basic_string<char>*, vector<__cxx11::basic_string<char> > > >; _ForwardIterator = toml::basic_value<toml::type_config>*]’:
/usr/include/toml11/value.hpp:548:87: note: ‘<anonymous>’ declared here
548 | : basic_value(std::move(x), string_format_info{}, std::vector<std::string>{}, region_type{})
| ^~~~~~~~~~~~~
In constructor ‘toml::detail::region::region(toml::detail::region&&)’,
inlined from ‘toml::basic_value<TypeConcig>::basic_value(string_type, toml::string_format_info, std::vector<std::__cxx11::basic_string<char> >, region_type) [with TypeConfig = toml::type_config]’ at /usr/include/toml11/value.hpp:562:11,
inlined from ‘toml::basic_value<TypeConcig>::basic_value(string_type) [with TypeConfig = toml::type_config]’ at /usr/include/toml11/value.hpp:548:100,
inlined from ‘void std::_Construct(_Tp*, _Args&& ...) [with _Tp = toml::basic_value<toml::type_config>; _Args = {__cxx11::basic_string<char, char_traits<char>, allocator<char> >}]’ at /usr/include/c++/14/bits/stl_construct.h:119:7,
inlined from ‘_ForwardIterator std::__do_uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = move_iterator<__gnu_cxx::__normal_iterator<__cxx11::basic_string<char>*, vector<__cxx11::basic_string<char> > > >; _ForwardIterator = toml::basic_value<toml::type_config>*]’ at /usr/include/c++/14/bits/stl_uninitialized.h:120:21:
/usr/include/toml11/fwd/region_fwd.hpp:49:5: error: ‘<unnamed>.toml::detail::region::last_’ may be used uninitialized [-Werror=maybe-uninitialized]
49 | region(region&&) = default;
| ^~~~~~
/usr/include/toml11/value.hpp: In function ‘_ForwardIterator std::__do_uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = move_iterator<__gnu_cxx::__normal_iterator<__cxx11::basic_string<char>*, vector<__cxx11::basic_string<char> > > >; _ForwardIterator = toml::basic_value<toml::type_config>*]’:
/usr/include/toml11/value.hpp:548:87: note: ‘<anonymous>’ declared here
548 | : basic_value(std::move(x), string_format_info{}, std::vector<std::string>{}, region_type{})
| ^~~~~~~~~~~~~
cc1plus: all warnings being treated as errors