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| author | Jonathan Wakely <jwakely@redhat.com> | 2022-09-29 11:30:05 +0100 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2022-10-05 13:39:28 +0100 |
| commit | dc70f3f81bb980b69a1910c2e6d3774ddd716846 (patch) | |
| tree | d476048a76f4f31d119e8ccc7c02463ddfede94c | |
| parent | 4c451631f722c9939260a5c2fc209802a47e525f (diff) | |
| download | gcc-dc70f3f81bb980b69a1910c2e6d3774ddd716846.zip gcc-dc70f3f81bb980b69a1910c2e6d3774ddd716846.tar.gz gcc-dc70f3f81bb980b69a1910c2e6d3774ddd716846.tar.bz2 | |
libstdc++: Guard use of new built-in with __has_builtin
Another case where I forgot that non-GCC compilers don't have this
built-in yet.
libstdc++-v3/ChangeLog:
* include/bits/invoke.h (__invoke_r): Check
__has_builtin(__reference_converts_from_temporary) before using
built-in.
| -rw-r--r-- | libstdc++-v3/include/bits/invoke.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libstdc++-v3/include/bits/invoke.h b/libstdc++-v3/include/bits/invoke.h index 8724a76..8fa8cf8 100644 --- a/libstdc++-v3/include/bits/invoke.h +++ b/libstdc++-v3/include/bits/invoke.h @@ -130,8 +130,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { using __result = __invoke_result<_Callable, _Args...>; using __type = typename __result::type; +#if __has_builtin(__reference_converts_from_temporary) static_assert(!__reference_converts_from_temporary(_Res, __type), "INVOKE<R> must not create a dangling reference"); +#endif using __tag = typename __result::__invoke_type; return std::__invoke_impl<__type>(__tag{}, std::forward<_Callable>(__fn), std::forward<_Args>(__args)...); |