[Bug other/87084] Excessive diagnostic messages for invalid use of __builtin_va_arg_pack{,_len}() in a loop

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87084

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The error happens after some optimization.  In this case, it happens after loop
unrolling has happened.