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Warnings gcc11 C++17 #805

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ferdymercury opened this issue Nov 21, 2022 · 4 comments
Closed

Warnings gcc11 C++17 #805

ferdymercury opened this issue Nov 21, 2022 · 4 comments

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@ferdymercury
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When including CLI11 in my program (C++17 standard), I get the following warnings. Is there anything I am doing incorrectly, or are these known?
Thanks.

/opt/CLI11/include/CLI/App.hpp:1358: warning: redundant redeclaration of ‘std::string CLI::FailureMessage::simple(const CLI::App*, const CLI::Error&)’ in same scope [-Wredundant-decls]
In file included from bth.cpp:8:
/opt/CLI11/include/CLI/App.hpp:1358:26: warning: redundant redeclaration of ‘std::string CLI::FailureMessage::simple(const CLI::App*, const CLI::Error&)’ in same scope [-Wredundant-decls]
 1358 | CLI11_INLINE std::string simple(const App *app, const Error &e);
      |                          ^~~~~~
/opt/CLI11/include/CLI/App.hpp:52:13: note: previous declaration of ‘std::string CLI::FailureMessage::simple(const CLI::App*, const CLI::Error&)’
   52 | std::string simple(const App *app, const Error &e);
      |             ^~~~~~
/opt/CLI11/include/CLI/App.hpp:1361: warning: redundant redeclaration of ‘std::string CLI::FailureMessage::help(const CLI::App*, const CLI::Error&)’ in same scope [-Wredundant-decls]
/opt/CLI11/include/CLI/App.hpp:1361:26: warning: redundant redeclaration of ‘std::string CLI::FailureMessage::help(const CLI::App*, const CLI::Error&)’ in same scope [-Wredundant-decls]
 1361 | CLI11_INLINE std::string help(const App *app, const Error &e);
      |                          ^~~~
/opt/CLI11/include/CLI/App.hpp:53:13: note: previous declaration of ‘std::string CLI::FailureMessage::help(const CLI::App*, const CLI::Error&)’
   53 | std::string help(const App *app, const Error &e);
      |             ^~~~
/opt/CLI11/include/CLI/Validators.hpp:84: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Validator::<lambda()>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::Validator::<lambda()>&; _Args = {}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::Validator::<lambda()>&>, CLI::Validator::<lambda()>&>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::Validator::<lambda()>&>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, void>, std::__call_is_nothrow<std::__invoke_result<CLI::Validator::<lambda()>&>, CLI::Validator::<lambda()>&> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<std::__cxx11::basic_string<char>, CLI::Validator::<lambda()>&>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<std::__cxx11::basic_string<char>, CLI::Validator::<lambda()>&>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = std::__cxx11::basic_string<char>; _Callable = CLI::Validator::<lambda()>&; _Args = {}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = std::__cxx11::basic_string<char>]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = std::__cxx11::basic_string<char>; _Functor = CLI::Validator::<lambda()>; _ArgTypes = {}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::Validator::<lambda()>; _Constraints = void; _Res = std::__cxx11::basic_string<char>; _ArgTypes = {}]’
/opt/CLI11/include/CLI/Validators.hpp:84:79:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Validator::<lambda()>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/Option.hpp:24: In file included from /opt/CLI11/include/CLI/Option.hpp:24,
In file included from /opt/CLI11/include/CLI/Option.hpp:24,
                 from /opt/CLI11/include/CLI/App.hpp:29,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/Validators.hpp:84:49: note: but ‘CLI::Validator::<lambda()>’ does not throw; perhaps it should be declared ‘noexcept’
   84 |     std::function<std::string()> desc_function_{[]() { return std::string{}; }};
      |                                                 ^
/opt/CLI11/include/CLI/Validators.hpp:88: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Validator::<lambda(std::string&)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::Validator::<lambda(std::string&)>&; _Args = {std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&>, CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, void>, std::__call_is_nothrow<std::__invoke_result<CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&>, CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<std::__cxx11::basic_string<char>, CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<std::__cxx11::basic_string<char>, CLI::Validator::<lambda(std::string&)>&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = std::__cxx11::basic_string<char>; _Callable = CLI::Validator::<lambda(std::string&)>&; _Args = {std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = std::__cxx11::basic_string<char>]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = std::__cxx11::basic_string<char>; _Functor = CLI::Validator::<lambda(std::string&)>; _ArgTypes = {std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::Validator::<lambda(std::string&)>; _Constraints = void; _Res = std::__cxx11::basic_string<char>; _ArgTypes = {std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&}]’
/opt/CLI11/include/CLI/Validators.hpp:88:96:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Validator::<lambda(std::string&)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/Option.hpp:24: In file included from /opt/CLI11/include/CLI/Option.hpp:24,
In file included from /opt/CLI11/include/CLI/Option.hpp:24,
                 from /opt/CLI11/include/CLI/App.hpp:29,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/Validators.hpp:88:53: note: but ‘CLI::Validator::<lambda(std::string&)>’ does not throw; perhaps it should be declared ‘noexcept’
   88 |     std::function<std::string(std::string &)> func_{[](std::string &) { return std::string{}; }};
      |                                                     ^
/opt/CLI11/include/CLI/Option.hpp:270: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Option::<lambda()>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::Option::<lambda()>&; _Args = {}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::Option::<lambda()>&>, CLI::Option::<lambda()>&>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::Option::<lambda()>&>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, void>, std::__call_is_nothrow<std::__invoke_result<CLI::Option::<lambda()>&>, CLI::Option::<lambda()>&> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<std::__cxx11::basic_string<char>, CLI::Option::<lambda()>&>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<std::__cxx11::basic_string<char>, CLI::Option::<lambda()>&>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = std::__cxx11::basic_string<char>; _Callable = CLI::Option::<lambda()>&; _Args = {}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = std::__cxx11::basic_string<char>]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = std::__cxx11::basic_string<char>; _Functor = CLI::Option::<lambda()>; _ArgTypes = {}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::Option::<lambda()>; _Constraints = void; _Res = std::__cxx11::basic_string<char>; _ArgTypes = {}]’
/opt/CLI11/include/CLI/Option.hpp:270:75:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Option::<lambda()>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/App.hpp:29: In file included from /opt/CLI11/include/CLI/App.hpp:29,
In file included from /opt/CLI11/include/CLI/App.hpp:29,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/Option.hpp:270:45: note: but ‘CLI::Option::<lambda()>’ does not throw; perhaps it should be declared ‘noexcept’
  270 |     std::function<std::string()> type_name_{[]() { return std::string(); }};
      |                                             ^
/opt/CLI11/include/CLI/impl/App_inl.hpp:1173: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::App::_process_requirements()::<lambda(CLI::App*)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::App::_process_requirements()::<lambda(CLI::App*)>&; _Args = {CLI::App*}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*>, CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*>, bool, void>, std::__call_is_nothrow<std::__invoke_result<CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*>, CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<bool, CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<bool, CLI::App::_process_requirements()::<lambda(CLI::App*)>&, CLI::App*>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = bool; _Callable = CLI::App::_process_requirements()::<lambda(CLI::App*)>&; _Args = {CLI::App*}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = bool]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = bool; _Functor = CLI::App::_process_requirements()::<lambda(CLI::App*)>; _ArgTypes = {CLI::App*}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::App::_process_requirements()::<lambda(CLI::App*)>; _Constraints = void; _Res = bool; _ArgTypes = {CLI::App*}]’
/opt/CLI11/include/CLI/impl/App_inl.hpp:1173:41:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::App::_process_requirements()::<lambda(CLI::App*)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/App.hpp:1403: In file included from /opt/CLI11/include/CLI/App.hpp:1403,
In file included from /opt/CLI11/include/CLI/App.hpp:1403,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/impl/App_inl.hpp:1173:42: note: but ‘CLI::App::_process_requirements()::<lambda(CLI::App*)>’ does not throw; perhaps it should be declared ‘noexcept’
 1173 |         auto subc_list = get_subcommands([](App *app) { return ((app->get_name().empty()) && (!app->disabled_)); });
      |                                          ^
/opt/CLI11/include/CLI/impl/App_inl.hpp:1953: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&; _Args = {long unsigned int}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>, void, void>, std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<void, CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<void, CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = void; _Callable = CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>&; _Args = {long unsigned int}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = void]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = void; _Functor = CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>; _ArgTypes = {long unsigned int}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>; _Constraints = void; _Res = void; _ArgTypes = {long unsigned int}]’
/opt/CLI11/include/CLI/impl/App_inl.hpp:1953:35:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/App.hpp:1403: In file included from /opt/CLI11/include/CLI/App.hpp:1403,
In file included from /opt/CLI11/include/CLI/App.hpp:1403,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/impl/App_inl.hpp:1953:36: note: but ‘CLI::TriggerOn(CLI::App*, CLI::App*)::<lambda(std::size_t)>’ does not throw; perhaps it should be declared ‘noexcept’
 1953 |     trigger_app->preparse_callback([app_to_enable](std::size_t) { app_to_enable->disabled(false); });
      |                                    ^
/opt/CLI11/include/CLI/impl/App_inl.hpp:1962: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&; _Args = {long unsigned int}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>, void, void>, std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<void, CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<void, CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = void; _Callable = CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&; _Args = {long unsigned int}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = void]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = void; _Functor = CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>; _ArgTypes = {long unsigned int}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>; _Constraints = void; _Res = void; _ArgTypes = {long unsigned int}]’
/opt/CLI11/include/CLI/impl/App_inl.hpp:1962:35:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/App.hpp:1403: In file included from /opt/CLI11/include/CLI/App.hpp:1403,
In file included from /opt/CLI11/include/CLI/App.hpp:1403,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/impl/App_inl.hpp:1962:36: note: but ‘CLI::TriggerOn(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>’ does not throw; perhaps it should be declared ‘noexcept’
 1962 |     trigger_app->preparse_callback([apps_to_enable](std::size_t) {
      |                                    ^
/opt/CLI11/include/CLI/impl/App_inl.hpp:1972: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&; _Args = {long unsigned int}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>, void, void>, std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<void, CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<void, CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = void; _Callable = CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>&; _Args = {long unsigned int}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = void]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = void; _Functor = CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>; _ArgTypes = {long unsigned int}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>; _Constraints = void; _Res = void; _ArgTypes = {long unsigned int}]’
/opt/CLI11/include/CLI/impl/App_inl.hpp:1972:35:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/App.hpp:1403: In file included from /opt/CLI11/include/CLI/App.hpp:1403,
In file included from /opt/CLI11/include/CLI/App.hpp:1403,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/impl/App_inl.hpp:1972:36: note: but ‘CLI::TriggerOff(CLI::App*, CLI::App*)::<lambda(std::size_t)>’ does not throw; perhaps it should be declared ‘noexcept’
 1972 |     trigger_app->preparse_callback([app_to_enable](std::size_t) { app_to_enable->disabled(); });
      |                                    ^
/opt/CLI11/include/CLI/impl/App_inl.hpp:1981: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&; _Args = {long unsigned int}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>, void, void>, std::__call_is_nothrow<std::__invoke_result<CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>, CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<void, CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<void, CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&, long unsigned int>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = void; _Callable = CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>&; _Args = {long unsigned int}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = void]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = void; _Functor = CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>; _ArgTypes = {long unsigned int}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>; _Constraints = void; _Res = void; _ArgTypes = {long unsigned int}]’
/opt/CLI11/include/CLI/impl/App_inl.hpp:1981:35:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/App.hpp:1403: In file included from /opt/CLI11/include/CLI/App.hpp:1403,
In file included from /opt/CLI11/include/CLI/App.hpp:1403,
                 from bth.cpp:8:
/opt/CLI11/include/CLI/impl/App_inl.hpp:1981:36: note: but ‘CLI::TriggerOff(CLI::App*, std::vector<CLI::App*>)::<lambda(std::size_t)>’ does not throw; perhaps it should be declared ‘noexcept’
 1981 |     trigger_app->preparse_callback([apps_to_enable](std::size_t) {
      |                                    ^
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:102: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&; _Args = {const CLI::Option*}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>, bool, void>, std::__call_is_nothrow<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<bool, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<bool, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = bool; _Callable = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&; _Args = {const CLI::Option*}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = bool]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = bool; _Functor = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>; _ArgTypes = {const CLI::Option*}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>; _Constraints = void; _Res = bool; _ArgTypes = {const CLI::Option*}]’
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:102:25:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/Formatter.hpp:24: In file included from /opt/CLI11/include/CLI/Formatter.hpp:24,
In file included from /opt/CLI11/include/CLI/Formatter.hpp:24,
                 from bth.cpp:10:
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:102:26: note: but ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>’ does not throw; perhaps it should be declared ‘noexcept’
  102 |         app->get_options([](const Option *opt) { return opt->nonpositional(); });
      |                          ^
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:107: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&; _Args = {const CLI::Option*}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>, bool, void>, std::__call_is_nothrow<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<bool, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<bool, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&, const CLI::Option*>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = bool; _Callable = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>&; _Args = {const CLI::Option*}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = bool]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = bool; _Functor = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>; _ArgTypes = {const CLI::Option*}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>; _Constraints = void; _Res = bool; _ArgTypes = {const CLI::Option*}]’
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:107:63:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/Formatter.hpp:24: In file included from /opt/CLI11/include/CLI/Formatter.hpp:24,
In file included from /opt/CLI11/include/CLI/Formatter.hpp:24,
                 from bth.cpp:10:
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:107:64: note: but ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::Option*)>’ does not throw; perhaps it should be declared ‘noexcept’
  107 |     std::vector<const Option *> positionals = app->get_options([](const Option *opt) { return opt->get_positional(); });
      |                                                                ^
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:121: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>’ [-Wnoexcept]
In file included from /usr/include/c++/11/bits/move.h:57,
                 from /usr/include/c++/11/bits/exception_ptr.h:43,
                 from /usr/include/c++/11/exception:153,
                 from /usr/include/c++/11/ios:39,
                 from /usr/include/c++/11/ostream:38,
                 from /usr/include/c++/11/iostream:39,
                 from bth.cpp:5:
/usr/include/c++/11/type_traits: In instantiation of ‘constexpr bool std::__call_is_nt(std::__invoke_other) [with _Fn = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&; _Args = {const CLI::App*}]’:
/usr/include/c++/11/type_traits:2966:34:   required from ‘struct std::__call_is_nothrow<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*>, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*>’
/usr/include/c++/11/type_traits:152:12:   required from ‘struct std::__and_<std::__is_nt_invocable_impl<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*>, bool, void>, std::__call_is_nothrow<std::__invoke_result<CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*>, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*> >’
/usr/include/c++/11/type_traits:3064:12:   required from ‘struct std::is_nothrow_invocable_r<bool, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*>’
/usr/include/c++/11/type_traits:3269:52:   required from ‘constexpr const bool std::is_nothrow_invocable_r_v<bool, CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&, const CLI::App*>’
/usr/include/c++/11/bits/invoke.h:105:14:   required from ‘constexpr std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> std::__invoke_r(_Callable&&, _Args&& ...) [with _Res = bool; _Callable = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>&; _Args = {const CLI::App*}; std::enable_if_t<is_invocable_r_v<_Res, _Callable, _Args ...>, _Res> = bool]’
/usr/include/c++/11/bits/std_function.h:290:30:   required from ‘static _Res std::_Function_handler<_Res(_ArgTypes ...), _Functor>::_M_invoke(const std::_Any_data&, _ArgTypes&& ...) [with _Res = bool; _Functor = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>; _ArgTypes = {const CLI::App*}]’
/usr/include/c++/11/bits/std_function.h:451:21:   required from ‘std::function<_Res(_ArgTypes ...)>::function(_Functor&&) [with _Functor = CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>; _Constraints = void; _Res = bool; _ArgTypes = {const CLI::App*}]’
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:121:29:   required from here
/usr/include/c++/11/type_traits:2960:14: warning: noexcept-expression evaluates to ‘false’ because of a call to ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>’ [-Wnoexcept]
 2960 |       return noexcept(std::declval<_Fn>()(std::declval<_Args>()...));
      |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/CLI11/include/CLI/Formatter.hpp:24: In file included from /opt/CLI11/include/CLI/Formatter.hpp:24,
In file included from /opt/CLI11/include/CLI/Formatter.hpp:24,
                 from bth.cpp:10:
/opt/CLI11/include/CLI/impl/Formatter_inl.hpp:122:16: note: but ‘CLI::Formatter::make_usage(const CLI::App*, std::string) const::<lambda(const CLI::App*)>’ does not throw; perhaps it should be declared ‘noexcept’
  122 |                [](const CLI::App *subc) { return ((!subc->get_disabled()) && (!subc->get_name().empty())); })
      |                ^
@jzakrzewski
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Frankly, those warnings seem picky as hell.
I tend to include 3-party code via -isystem if I want my code to compile cleanly at high warning settings.

@ferdymercury
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That's indeed a good workaround, thanks for the suggestion.

@phlptp
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phlptp commented Nov 22, 2022

There might be something we can do with the -Wredundant-decls warnings, but the -fnoexcept ones I don't think are worth fixing since the fix in some cases would make the code less clear and unconventional.

This was referenced Dec 7, 2022
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@phlptp
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phlptp commented Dec 10, 2022

-Wredundant-decls have been resolved in #813 and there are reasons not to fix the noexcept warnings for code clarity. so I am going to close this issue. Thank you for bringing it up!

@phlptp phlptp closed this as completed Dec 10, 2022
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