https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68251
Bug ID: 68251 Summary: [6 Regression] sorry, unimplemented: reverse storage order for BLKmode Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: Joost.VandeVondele at mat dot ethz.ch Target Milestone: --- Nightly build of CP2K failed with: sorry, unimplemented: reverse storage order for BLKmode , between good r229944 and bad r229981 I'm reducing the testcase, but a single couple takes several minutes before the error triggers, so it will take a while.