PHP_HAVE_BUILTIN_EXPECT  100 Zend/zend_portability.h #elif ((defined(__GNUC__) && ZEND_GCC_VERSION >= 4005) || __has_builtin(__builtin_unreachable)) && PHP_HAVE_BUILTIN_EXPECT
PHP_HAVE_BUILTIN_EXPECT  302 Zend/zend_portability.h #if PHP_HAVE_BUILTIN_EXPECT