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Patrick Palka d187dfbd03 libstdc++: Fix up implementation of LWG 3533 [PR101589]
In r12-569 I accidentally applied the LWG 3533 change to
elements_view::iterator::base instead to elements_view::base.

This patch corrects this, and also applies the corresponding LWG 3533
change to lazy_split_view::inner-iter::base now that we implement P2210.

	PR libstdc++/101589

libstdc++-v3/ChangeLog:

	* include/std/ranges (lazy_split_view::_InnerIter::base): Make
	the const& overload unconstrained and return a const reference
	as per LWG 3533.  Make unconditionally noexcept.
	(elements_view::base): Revert accidental r12-569 change.
	(elements_view::_Iterator::base): Make the const& overload
	unconstrained and return a const reference as per LWG 3533.
	Make unconditionally noexcept.

(cherry picked from commit 4414057186)
2021-10-12 13:55:05 -04:00
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libstdc++-v3 libstdc++: Fix up implementation of LWG 3533 [PR101589] 2021-10-12 13:55:05 -04:00
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