release clang++ std=c++23/26 trunk version emit diagnostics errors on #include <boost/program_options.hpp>

From: Bjørn Roald (bjorn.roald_at_[hidden])
Date: 2024-03-17 11:57:01

https://gcc.godbolt.org/z/d3PTjdMhr

this is fixed by changing suspect throw() declarations with BOOST_NOEXCEPT

I have not checked rest of boost for diagnostics with this compiler, but my understanding is 
that throw() declarations are no longer part of the standard and compilers may emit diagnostics like this.  Is there any reason, except for the work to be done, not to use BOOST_NOEXCEPT everywhere?

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Bjørn