RB_UNLIKELY 1620 include/ruby/ruby.h if (RB_UNLIKELY(cnt > LONG_MAX / sizeof(VALUE))) { RB_UNLIKELY 1626 include/ruby/ruby.h if (RB_UNLIKELY(rb_mul_size_overflow(count, elsize, max, &size))) { RB_UNLIKELY 27 internal.h #define UNLIKELY(x) RB_UNLIKELY(x)