https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85600
--- Comment #2 from Pat Haugen <pthaugen at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #1) > Does adding -fno-lifetime-dse help? This could be a bug in the omnetpp > sources ... Nope, still fails. 471.omnetpp: copy 0 non-zero return code (exit code=1, signal=0)