In
r14-5689-g1fa85dcf656e2f I added std::span::at and made the correct
changes to the __cpp_lib_span macro (with tests for the correct value in
C++20/23/26). But I didn't make the declaration of std::span::at
actually depend on the macro, so it was defined for C++20 and C++23, not
only for C++26. This fixes that oversight.
libstdc++-v3/ChangeLog:
PR libstdc++/115335
* include/std/span (span::at): Guard with feature test macro.
return *(this->_M_ptr + __idx);
}
+#if __cpp_lib_span >= 202311L // >= C++26
[[nodiscard]]
constexpr reference
at(size_type __idx) const
"of size %zu"), __idx, this->size());
return *(this->_M_ptr + __idx);
}
+#endif
[[nodiscard]]
constexpr pointer