https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68251
--- Comment #3 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> --- Created attachment 36667 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36667&action=edit partially reduced testcase I attach a partially reduced testcase, reduction will continue for a while. gfortran -c -O3 -D__LIBINT -cpp 493.f90