[Bug c/68272] Unwanted out-of-line instances for C inline functions that are also GCC builtins.

[sorganov at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68272

--- Comment #6 from Sergey Organov <sorganov at gmail dot com> ---
For reference, the work-around for the problem is __attribute__((gnu_inline)),
i.e., effectively turning inlining mode back to pre-c99.