[libc++] Add details about string annotations (#82730)

This commit adds information that only long strings are annotated, and
with all allocators by default.

To read why short string annotations are not turned on yet, read
comments in a related PR:
https://github.com/llvm/llvm-project/pull/79536

Upstreamed in: 7661ade5d1ac4fc8e1e2339b2476cb8e45c24641
Upstream PR: #80912

---------

Co-authored-by: Mark de Wever <zar-rpg@xs4all.nl>

Co-authored-by: Mark de Wever <zar-rpg@xs4all.nl>
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Tacet 2024-02-23 22:06:47 +01:00 committed by GitHub
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@ -125,6 +125,8 @@ Improvements and New Features
``${PREFIX}/share/libc++/v1``.
- AddressSanitizer annotations have been added to ``std::basic_string``.
These annotations are enabled for all allocators by default.
It's only enabled for long strings, strings using the small buffer optimization are not annotated.
- The libc++ source code has been formatted with ``clang-format``. This
`discourse thread <https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all>`_