Re: [boost] [config] does BOOST_ATTRIBUTE_UNUSED defined implies __attribute__((used)) exists ?

AMDG On 09/17/2018 02:46 PM, Raffi Enficiaud via Boost wrote:

I have a problem with symbol visibility in boost.test: https://github.com/boostorg/boost/pull/190

I am wondering if __attribute__((used)) is a portable way to flag a static const ref as being used, or there are variations (__attribute__((used)) vs __attribute__((__used__))).

I am also wondering if __attribute__((used)) can be considered as available if BOOST_ATTRIBUTE_UNUSED is defined.

Probably not. Even if it works, it's purely by coincidence. __attribute__((used)) and __attribute_((unused)) are completely different, even if the names are similar.

Would it make sense to have an BOOST_ATTRIBUTE_USED in boost.config?

In Christ, Steven Watanabe