Ruby  3.4.0dev (2024-11-05 revision 348a53415339076afc4a02fcd09f3ae36e9c4c61)
Macros
noexcept.h File Reference

(348a53415339076afc4a02fcd09f3ae36e9c4c61)

Defines RBIMPL_ATTR_NOEXCEPT. More...

#include "ruby/internal/compiler_since.h"
#include "ruby/internal/has/feature.h"
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Macros

#define RBIMPL_ATTR_NOEXCEPT(_)   noexcept(noexcept(_))
 Wraps (or simulates) C++11 noexcept More...
 

Detailed Description

Defines RBIMPL_ATTR_NOEXCEPT.

Author
Ruby developers ruby-.nosp@m.core.nosp@m.@ruby.nosp@m.-lan.nosp@m.g.org
Warning
Symbols prefixed with either RBIMPL or rbimpl are implementation details. Don't take them as canon. They could rapidly appear then vanish. The name (path) of this header file is also an implementation detail. Do not expect it to persist at the place it is now. Developers are free to move it anywhere anytime at will.
Note
To ruby-core: remember that this header can be possibly recursively included from extension libraries written in C++. Do not expect for instance __VA_ARGS__ is always available. We assume C99 for ruby itself but we don't assume languages of extension libraries. They could be written in C++98.

This isn't actually an attribute in C++ but who cares...

Mainly due to aesthetic reasons, this one is rarely used in the project. But can be handy on occasions, especially when a function's noexcept-ness depends on its calling functions.

Q&A

Definition in file noexcept.h.

Macro Definition Documentation

◆ RBIMPL_ATTR_NOEXCEPT

#define RBIMPL_ATTR_NOEXCEPT (   _)    noexcept(noexcept(_))

Wraps (or simulates) C++11 noexcept

Definition at line 73 of file noexcept.h.