[Bug c/69507] bogus warning: ISO C does not allow ‘__alignof__ (expression)’

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69507

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I don't think this is a bogus warning.  -pedantic turns off all of GCC
extensions including __attribute__ and asm support IIRC.