[libcxx-commits] [PATCH] D87459: [libcxx][test] ostream{, buf}_iterator::difference_type changes in C++20

[Louis Dionne via Phabricator via libcxx-commits]

ldionne added a comment.

In D87459#2265871 <https://reviews.llvm.org/D87459#2265871>, @CaseyCarter wrote:

> In D87459#2265864 <https://reviews.llvm.org/D87459#2265864>, @ldionne wrote:
>
>> What paper is this? I searched but failed to find a paper this falls off from.
>
> P0896R4 "The One Ranges Proposal" - Ranges demands that all iterators have useful difference types.

Ah, I see it. I'll add that bit to libc++ so we don't need special casing in the tests.


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https://reviews.llvm.org/D87459