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#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
/* C99 / C++11 and above: rely on va_copy() which is required. */
#define DUK_VA_COPY(dest,src) va_copy(dest,src)
#else
/* Clang: assume we have __va_copy() in non-C99 mode. */
#define DUK_VA_COPY(dest,src) __va_copy(dest,src)
#endif
#define DUK_NORETURN(decl) decl __attribute__((noreturn))
#if defined(__clang__) && defined(__has_builtin)
#if __has_builtin(__builtin_unreachable)
#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0)
#endif
#endif
#define DUK_USE_BRANCH_HINTS
#define DUK_LIKELY(x) __builtin_expect((x), 1)
#define DUK_UNLIKELY(x) __builtin_expect((x), 0)
#if defined(__clang__) && defined(__has_builtin)
#if __has_builtin(__builtin_unpredictable)
#define DUK_UNPREDICTABLE(x) __builtin_unpredictable((x))
#endif
#endif
#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
#define DUK_NOINLINE __attribute__((noinline))
#define DUK_INLINE inline
#define DUK_ALWAYS_INLINE inline __attribute__((always_inline))
#endif
/* DUK_HOT */
/* DUK_COLD */
#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS)
#snippet "msvc_visibility.h.in"
#else
#snippet "gcc_clang_visibility.h.in"
#endif
#if defined(DUK_F_CPP)
#define DUK_USE_COMPILER_STRING "clang"
#else
#define DUK_USE_COMPILER_STRING "clang"
#endif
#undef DUK_USE_VARIADIC_MACROS
#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
#define DUK_USE_VARIADIC_MACROS
#endif
#define DUK_USE_UNION_INITIALIZERS
#undef DUK_USE_FLEX_C99
#undef DUK_USE_FLEX_ZEROSIZE
#undef DUK_USE_FLEX_ONESIZE
#if defined(DUK_F_C99)
#define DUK_USE_FLEX_C99
#else
#define DUK_USE_FLEX_ZEROSIZE
#endif
#undef DUK_USE_GCC_PRAGMAS
#define DUK_USE_PACK_CLANG_ATTR
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