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Add BOOST_CONTAINER_HAS_BUILTIN and BOOST_CONTAINER_ASSUME

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Ion Gaztañaga
2026-05-24 02:04:11 +02:00
parent 31846f7937
commit e416edcbe6
1 changed files with 25 additions and 0 deletions
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include/boost/container/detail/workaround.hpp
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@@ -268,4 +268,29 @@ namespace boost {
#define BOOST_CONTAINER_UNROLL(n)
#endif
#ifdef __has_builtin
#define BOOST_CONTAINER_HAS_BUILTIN(x) __has_builtin(x)
#else
#define BOOST_CONTAINER_HAS_BUILTIN(x) 0
#endif
#if !defined(NDEBUG)
#define BOOST_CONTAINER_ASSUME(cond) BOOST_ASSERT(cond)
#elif BOOST_CONTAINER_HAS_BUILTIN(__builtin_assume)
#define BOOST_CONTAINER_ASSUME(cond) __builtin_assume(cond)
#elif defined(__GNUC__) || \
BOOST_CONTAINER_HAS_BUILTIN(__builtin_unreachable)
#define BOOST_CONTAINER_ASSUME(cond) \
do{ \
if(!(cond)) __builtin_unreachable(); \
} while(0)
#elif defined(_MSC_VER)
#define BOOST_CONTAINER_ASSUME(cond) __assume(cond)
#else
#define BOOST_CONTAINER_ASSUME(cond) \
do{ \
static_cast<void>(false && (cond)); \
} while(0)
#endif
#endif //#ifndef BOOST_CONTAINER_DETAIL_WORKAROUND_HPP