Nikolas Klauser ba87515fea

[libc++][RFC] Always define internal feature test macros (#89178) ...

Currently, the library-internal feature test macros are only defined if
the feature is not available, and always have the prefix
`_LIBCPP_HAS_NO_`. This patch changes that, so that they are always
defined and have the prefix `_LIBCPP_HAS_` instead. This changes the
canonical use of these macros to `#if _LIBCPP_HAS_FEATURE`, which means
that using an undefined macro (e.g. due to a missing include) is
diagnosed now. While this is rather unlikely currently, a similar change
in `<__configuration/availability.h>` caught a few bugs. This also
improves readability, since it removes the double-negation of `#ifndef
_LIBCPP_HAS_NO_FEATURE`.

The current patch only touches the macros defined in `<__config>`. If
people are happy with this approach, I'll make a follow-up PR to also
change the macros defined in `<__config_site>`.

2024-10-12 09:49:52 +02:00

..

randomize_range.h

…

sanitizers.h

[libc++][RFC] Always define internal feature test macros (#89178)

2024-10-12 09:49:52 +02:00

strict_weak_ordering_check.h

[libc++][hardening] Categorize assertions related to strict weak ordering (#77405)

2024-01-22 23:31:58 -08:00