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In the recent Patch Tuesday update microsoft#47326 this port triggers undefined behavior warnings I am unwilling to suppress, reproduced below. Moreover, upstream has made no release in 7 years and has an explicit ask for a maintainer for the last 4 years. ```console [10/15] /usr/bin/c++ -I/vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/. -I/vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean -Wall -Wextra -std=c++11 -O3 -DNDEBUG -MD -MT test/bf/CMakeFiles/bf.dir/bf.cc.o -MF test/bf/CMakeFiles/bf.dir/bf.cc.o.d -o test/bf/CMakeFiles/bf.dir/bf.cc.o -c /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc In file included from /usr/include/c++/13/string:54, from /usr/include/c++/13/bits/locale_classes.h:40, from /usr/include/c++/13/bits/ios_base.h:41, from /usr/include/c++/13/ios:44, from /usr/include/c++/13/istream:40, from /usr/include/c++/13/fstream:40, from /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:2: In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:36:12: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: using a dangling pointer to an unnamed temporary [-Wdangling-pointer=] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:36:12: /usr/include/c++/13/bits/basic_string.h:223:28: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:49:19: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:49:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:59:19: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:59:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:69:19: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:69:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:89:19: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:89:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:96:19: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:96:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: dangling pointer to an unnamed temporary may be used [-Wdangling-pointer=] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: unnamed temporary defined here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3730:24, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:36:12: /usr/include/c++/13/bits/basic_string.h:1072:16: warning: ‘<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::._anon_92::value_.std::__cxx11::basic_string<char>::_M_string_length’ may be used uninitialized [-Wmaybe-uninitialized] 1072 | { return _M_string_length; } | ^~~~~~~~~~~~~~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: ‘<anonymous>’ declared here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:36:12: /usr/include/c++/13/bits/basic_string.h:223:28: warning: ‘<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::._anon_92::value_.std::__cxx11::basic_string<char>::_M_dataplus.std::__cxx11::basic_string<char>::_Alloc_hider::_M_p’ may be used uninitialized [-Wmaybe-uninitialized] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: ‘<anonymous>’ declared here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:49:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: ‘<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::._anon_92::value_.std::__cxx11::basic_string<char>::_M_dataplus.std::__cxx11::basic_string<char>::_Alloc_hider::_M_p’ may be used uninitialized [-Wmaybe-uninitialized] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: ‘<anonymous>’ declared here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:59:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: ‘<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::._anon_92::value_.std::__cxx11::basic_string<char>::_M_dataplus.std::__cxx11::basic_string<char>::_Alloc_hider::_M_p’ may be used uninitialized [-Wmaybe-uninitialized] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: ‘<anonymous>’ declared here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:89:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: ‘<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::._anon_92::value_.std::__cxx11::basic_string<char>::_M_dataplus.std::__cxx11::basic_string<char>::_Alloc_hider::_M_p’ may be used uninitialized [-Wmaybe-uninitialized] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: ‘<anonymous>’ declared here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ In member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::pointer std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’, inlined from ‘const _CharT* std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::data() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:2609:23, inlined from ‘bool std::operator==(const __cxx11::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) [with _CharT = char; _Traits = char_traits<char>; _Alloc = allocator<char>]’ at /usr/include/c++/13/bits/basic_string.h:3731:29, inlined from ‘util::trial<util::nothing> run(const config&)’ at /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:96:19: /usr/include/c++/13/bits/basic_string.h:223:28: warning: ‘<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::<unnamed>.util::trial<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::._anon_92::value_.std::__cxx11::basic_string<char>::_M_dataplus.std::__cxx11::basic_string<char>::_Alloc_hider::_M_p’ may be used uninitialized [-Wmaybe-uninitialized] 223 | { return _M_dataplus._M_p; } | ^~~~ /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc: In function ‘util::trial<util::nothing> run(const config&)’: /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/bf/bf.cc:33:42: note: ‘<anonymous>’ declared here 33 | auto const& type = *cfg.as<std::string>("type"); | ~~~~~~~~~~~~~~~~~~~^~~~~~~~ [11/15] /usr/bin/c++ -I/vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean -Wall -Wextra -std=c++11 -O3 -DNDEBUG -MD -MT test/CMakeFiles/bf-test.dir/tests.cpp.o -MF test/CMakeFiles/bf-test.dir/tests.cpp.o.d -o test/CMakeFiles/bf-test.dir/tests.cpp.o -c /vcpkg/buildtrees/libbf/src/v1.0.0-c9c3f8d18a.clean/test/tests.cpp ninja: build stopped: subcommand failed. ```
JavierMatosD
approved these changes
Sep 16, 2025
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In the recent Patch Tuesday update #47326 this port triggers undefined behavior warnings I am unwilling to suppress, reproduced below. Moreover, upstream has made no release in 7 years and has an explicit ask for a maintainer for the last 4 years.