Vitaly Buka c6d95c441a
[libc++] Fix initialization-order-fiasco with iostream.cpp constructors (#126995)
Asan reports it after #124103.

It's know case of false positive for Asan.

https://github.com/google/sanitizers/wiki/AddressSanitizerInitializationOrderFiasco#false-positives

It's can be avoided with `constexpr` constructors.

In general order global constructors in different
modules is undefined. If global constructor uses
external global, they can be not constructed yet.

However, implementation may contain workaround for
that, or the state of non-constructed global can
be still valid.

Asan will still falsely report such cases, as it
has no machinery to detect correctness of such
cases.

We need to fix/workaround the issue in libc++, as
it will affect many libc++ with Asan users.
2025-02-15 19:54:23 -08:00
2025-02-15 14:19:31 -06:00
2025-01-28 19:48:43 -08:00
2025-01-27 18:47:12 +01:00
2025-01-28 19:48:43 -08:00
2025-02-13 17:49:48 +00:00

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