https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71884
--- Comment #8 from anlauf at gcc dot gnu.org --- Created attachment 60157 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60157&action=edit Patch This patch rejects NULL() as source-expr, without or with MOLD. I believe that F03:C632 can be interpreted as being incompatible with having NULL() here. Intel ifx also rejects any such use I tried. (NAG first complains that the MOLD argument to NULL is missing, but when provided, it crashes severely at runtime.)