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Expand BOOST_ATTRIBUTE_UNUSED [[maybe_unused]]

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When available, supersedes: https://github.com/boostorg/config/pull/456
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jzmaddock
2022-11-16 18:57:05 +00:00
parent 72a2549a89
commit 5566315316
1 changed files with 13 additions and 0 deletions
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13
include/boost/config/detail/suffix.hpp
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@ -1071,9 +1071,22 @@ namespace std{ using ::type_info; }
//
// Unused variable/typedef workarounds:
//
#ifndef BOOST_ATTRIBUTE_UNUSED
# if defined(__has_attribute) && defined(__SUNPRO_CC) && (__SUNPRO_CC > 0x5130)
# if __has_attribute(maybe_unused)
# define BOOST_ATTRIBUTE_UNUSED [[maybe_unused]]
# endif
# elif defined(__has_cpp_attribute)
# if __has_cpp_attribute(maybe_unused)
# define BOOST_ATTRIBUTE_UNUSED [[maybe_unused]]
# endif
# endif
#endif
#ifndef BOOST_ATTRIBUTE_UNUSED
# define BOOST_ATTRIBUTE_UNUSED
#endif
//
// [[nodiscard]]:
//