gcc 7 build fix

AntelopeIO · Jan 25, 2023 · f926d59 · f926d59
1 parent 204b16e
commit f926d59
Showing 1 changed file with 7 additions and 5 deletions.
diff --git a/libraries/meta_refl/include/bluegrass/meta/function_traits.hpp b/libraries/meta_refl/include/bluegrass/meta/function_traits.hpp
@@ -18,7 +18,7 @@
  bluegrass::meta::overloaded { \
  [](auto&& f, std::enable_if_t<std::is_class_v<std::decay_t<decltype(f)>> && \
  bluegrass::meta::detail::pass_type< \
- decltype(&std::decay_t<decltype(f)>::type::NAME)>(), int> = 0) constexpr { \
+ decltype(&std::decay_t<decltype(f)>::type::NAME)>::value, int> = 0) constexpr { \
  return true; \
  }, [](...) constexpr { return false; } \
  }(bluegrass::meta::detail::wrapper_t<decltype(ARG)>{})
@@ -27,7 +27,7 @@
  bluegrass::meta::overloaded { \
  [](auto&& f, std::enable_if_t<std::is_class_v<TY> && \
  bluegrass::meta::detail::pass_type< \
- decltype(&std::decay_t<decltype(f)>::type::NAME)>(), int> = 0) constexpr { \
+ decltype(&std::decay_t<decltype(f)>::type::NAME)>::value, int> = 0) constexpr { \
  return true; \
  }, [](...) constexpr { return false; } \
  }(bluegrass::meta::detail::wrapper_t<TY>{})
@@ -36,7 +36,7 @@
  bluegrass::meta::overloaded { \
  [](auto&& f, std::enable_if_t<std::is_class_v<std::decay_t<decltype(f)>> && \
  bluegrass::meta::detail::pass_type< \
- decltype(&std::decay_t<decltype(f)>::type::template NAME)>(), int> = 0) constexpr { \
+ decltype(&std::decay_t<decltype(f)>::type::template NAME)>::value, int> = 0) constexpr { \
  return true; \
  }, [](...) constexpr { return false; } \
  }(bluegrass::meta::detail::wrapper_t<decltype(ARG)>{})
@@ -45,7 +45,7 @@
  bluegrass::meta::overloaded { \
  [](auto&& f, std::enable_if_t<std::is_class_v<TY> && \
  bluegrass::meta::detail::pass_type< \
- decltype(&std::decay_t<decltype(f)>::type::template NAME)>(), int> = 0) constexpr { \
+ decltype(&std::decay_t<decltype(f)>::type::template NAME)>::value, int> = 0) constexpr { \
  return true; \
  }, [](...) constexpr { return false; } \
  }(bluegrass::meta::detail::wrapper_t<TY>{})
@@ -63,7 +63,9 @@ namespace bluegrass { namespace meta {
 
  namespace detail {
  template <typename T>
- constexpr bool pass_type() { return true; }
+ struct pass_type {
+ enum { value = 1 };
+ };
 
  template <typename>
  constexpr bool is_callable_impl(...) {