[Bug c/59219] ____builtin___memcpy_chk and -fno-builtin-memcpy

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59219

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
But if you are using __builtin__xxx_chk you are using a builtin and thus
are required to follow the builtins semantic.  You can use __memcpy_chk
instead (but you won't get the optimization to memcpy for unknown
object sizes then).