Closed joseph-ireland closed 1 year ago
It seems that since commit b6807015f1d3bee2eb4d204, boost/hana/detail/struct_macros.hpp went from being generated with
export MAX_NUMBER_OF_MEMBERS=55; erb struct_macros.hpp.erb
to
erb struct_macros.hpp.erb
which resulted in the MAX_NUMBER_OF_MEMBERS defaulting to 40. This has broken backwards compatibility with older boost releases.
Also the error for overflowing MAX_NUMBER_OF_MEMBERS is quite cryptic:
/path/to/example.cpp:904:1: error: pasting "BOOST_HANA_ADAPT_ADT_IMPL_" and "(" does not give a valid preprocessing token BOOST_HANA_ADAPT_ADT(foo, ^
Maybe the smaller macros like BOOST_HANA_PP_NARG could have a higher limit to get a more sensible error like
error: use of undeclared identifier 'BOOST_HANA_ADAPT_ADT_IMPL_46'
It seems that since commit b6807015f1d3bee2eb4d204, boost/hana/detail/struct_macros.hpp went from being generated with
to
which resulted in the MAX_NUMBER_OF_MEMBERS defaulting to 40. This has broken backwards compatibility with older boost releases.
Also the error for overflowing MAX_NUMBER_OF_MEMBERS is quite cryptic:
Maybe the smaller macros like BOOST_HANA_PP_NARG could have a higher limit to get a more sensible error like