[Bug middle-end/86505] [6/7 Regression] __builtin_va_arg_pack_len() computes the number of arguments wrongly

[rpirrera at aitek dot it]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86505

--- Comment #9 from rpirrera at aitek dot it ---
The patch cannot be applied to the compiler we are using (GCC 5), we get a
function not defined error.
Is it possible to have a patch for GCC 5 too?

Thank you.