boost176 can't compile

[manbaum (Hsi Fun)]

An error occurred when I executed port upgrade outdated.

--->  Building boost176
Error: Failed to build boost176: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_mirrors.tuna.tsinghua.edu.cn_macports_release_tarballs_ports_devel_boost176/boost176/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.

I examined the main.log and found the following message.

:info:build ./boost/mpl/aux_/integral_wrapper.hpp:73:31: error: integer value -1 is outside the valid range of values [0, 3] for this enumeration type [-Wenum-constexpr-conversion]
:info:build     typedef AUX_WRAPPER_INST( BOOST_MPL_AUX_STATIC_CAST(AUX_WRAPPER_VALUE_TYPE, (value - 1)) ) prior;
:info:build                               ^
:info:build ./boost/mpl/aux_/static_cast.hpp:24:47: note: expanded from macro 'BOOST_MPL_AUX_STATIC_CAST'
:info:build #   define BOOST_MPL_AUX_STATIC_CAST(T, expr) static_cast<T>(expr)
:info:build                                               ^
:info:build 7 warnings and 1 error generated.

I'm on macOS High Sierra (version 10.13.6), port version 2.8.1.

[manbaum (Hsi Fun)]

Well, maybe I should update the info.

--->  Attempting to fetch boost176-1.76.0_10+no_single+no_static+python311.darwin_17.x86_64.tbz2 from http://packages.macports.org/boost176
--->  Building boost176
Error: Failed to build boost176: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_mirrors.tuna.tsinghua.edu.cn_macports_release_tarballs_ports_devel_boost176/boost176/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there is a bug.

[kencu (Ken)]

this is a duplicate of #68920

the quick fix is to force clang-15 for now, as per that ticket