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author | Jonathan Wakely <jwakely@redhat.com> | 2024-02-08 15:38:35 +0000 |
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committer | Jonathan Wakely <jwakely@redhat.com> | 2024-02-08 15:58:14 +0000 |
commit | 5fb204aaf34b68c427f5b2bfb933fed72fe3eafb (patch) | |
tree | 5d21eb7da31674ce6d49c57e24d2b040ef1bd46e /libstdc++-v3 | |
parent | d9459129ea8f8c3cbd6150b90e842decba7952a3 (diff) | |
download | gcc-5fb204aaf34b68c427f5b2bfb933fed72fe3eafb.zip gcc-5fb204aaf34b68c427f5b2bfb933fed72fe3eafb.tar.gz gcc-5fb204aaf34b68c427f5b2bfb933fed72fe3eafb.tar.bz2 |
libstdc++: Guard tr2::bases and tr2::direct_bases with __has_builtin
These non-standard extensions use GCC-specific built-ins. Use
__has_builtin to avoid errors when Clang compiles this header.
See https://github.com/llvm/llvm-project/issues/24289
libstdc++-v3/ChangeLog:
* include/tr2/type_traits (bases, direct_bases): Use
__has_builtin to check if required built-ins are supported.
Diffstat (limited to 'libstdc++-v3')
-rw-r--r-- | libstdc++-v3/include/tr2/type_traits | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libstdc++-v3/include/tr2/type_traits b/libstdc++-v3/include/tr2/type_traits index a7ebaf6..603039d 100644 --- a/libstdc++-v3/include/tr2/type_traits +++ b/libstdc++-v3/include/tr2/type_traits @@ -82,20 +82,23 @@ namespace tr2 /// Sequence abstraction metafunctions for manipulating a typelist. - +#if __has_builtin(__bases) /// Enumerate all the base classes of a class. Form of a typelist. template<typename _Tp> struct bases { typedef __reflection_typelist<__bases(_Tp)...> type; }; +#endif +#if __has_builtin(__direct_bases) /// Enumerate all the direct base classes of a class. Form of a typelist. template<typename _Tp> struct direct_bases { typedef __reflection_typelist<__direct_bases(_Tp)...> type; }; +#endif /// @} group metaprogramming } |