https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88856
Bug ID: 88856 Summary: [8/9 Regression] gfortran producing wrong code with -funroll-loops Product: gcc Version: 8.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: doko at debian dot org Target Milestone: --- seen when build scipy on s390x with the current GCC 8 branch. According to the Debian report [1] this is tracked down to miscompilation of one Fortran file with -funroll-loops. The Ubuntu report [2] has a "standalone" python test case. [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=915738 [2] https://bugs.launchpad.net/ubuntu/+source/python-scipy/+bug/1811798