[Bug bootstrap/80200] decNumber.c : error : #include_next is a GCC extension

[sch...@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80200

--- Comment #3 from Andreas Schwab <sch...@linux-m68k.org> ---
That looks like someone is using -Wsystem-headers.