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[libc++][NFC] Slight improvement to __availability documentation

This commit is contained in:
Louis Dionne 2022-03-22 16:48:30 -04:00
parent df948127ac
commit 59fae7b2c0
1 changed files with 13 additions and 3 deletions
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16
libcxx/include/__availability
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@ -91,6 +91,10 @@
// other exception types. These were put in the shared library to prevent
// code bloat from every user program defining the vtable for these exception
// types.
//
// Note that when exceptions are disabled, the methods that normally throw
// these exceptions can be used even on older deployment targets, but those
// methods will abort instead of throwing.
# define _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_VARIANT_ACCESS
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST
@ -99,10 +103,15 @@
# define _LIBCPP_AVAILABILITY_UNCAUGHT_EXCEPTIONS
// This controls the availability of the sized version of ::operator delete,
// which was added to the dylib later.
// ::operator delete[], and their align_val_t variants, which were all added
// in C++17, and hence not present in early dylibs.
# define _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE
// This controls the availability of the std::future_error exception.
//
// Note that when exceptions are disabled, the methods that normally throw
// std::future_error can be used even on older deployment targets, but those
// methods will abort instead of throwing.
# define _LIBCPP_AVAILABILITY_FUTURE_ERROR
// This controls the availability of std::type_info's vtable.
@ -126,7 +135,7 @@
# define _LIBCPP_AVAILABILITY_FILESYSTEM_POP
// # define _LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem
// This controls the availability of std::to_chars.
// This controls the availability of std::to_chars for integral arguments.
# define _LIBCPP_AVAILABILITY_TO_CHARS
// This controls the availability of floating-point std::to_chars functions.
@ -135,7 +144,8 @@
// This controls the availability of the C++20 synchronization library,
// which requires shared library support for various operations
// (see libcxx/src/atomic.cpp).
// (see libcxx/src/atomic.cpp). This includes <barier>, <latch>,
// <semaphore>, and notification functions on std::atomic.
# define _LIBCPP_AVAILABILITY_SYNC
// # define _LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait
// # define _LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier