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Merge pull request #88 from alexey-romanov/develop

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workaround for msvc compilers <= 1920
This commit is contained in:
Antony Polukhin
2021-07-24 21:35:04 +03:00
committed by GitHub
parent 0436e48a79 d1e7e87a31
commit 87c9c2d76c
1 changed files with 6 additions and 0 deletions
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6
include/boost/pfr/detail/fields_count.hpp
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@@ -295,7 +295,13 @@ constexpr std::size_t fields_count() noexcept {
// );
//#endif
#if defined(_MSC_VER) && (_MSC_VER <= 1920)
// Workaround for msvc compilers. Versions <= 1920 have a limit of max 1024 elements in template parameter pack
constexpr std::size_t max_fields_count = (sizeof(type) * CHAR_BIT >= 1024 ? 1024 : sizeof(type) * CHAR_BIT);
#else
constexpr std::size_t max_fields_count = (sizeof(type) * CHAR_BIT); // We multiply by CHAR_BIT because the type may have bitfields in T
#endif
constexpr std::size_t result = detail::detect_fields_count_dispatch<type>(size_t_<max_fields_count>{}, 1L, 1L);
detail::assert_first_not_base<type>(detail::make_index_sequence<result>{});