https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82996
--- Comment #9 from Neil Carlson <neil.n.carlson at gmail dot com> --- With today's version (r257782) I'm still seeing the same thing Dominique reported in comment 7, except that there is no longer any abort -- the programs terminate successfully (0 exit code) despite the reported runtime error. I'm not sure what to make of that. Example error: $ ./a.out gfortran-20171114a.f90:48: runtime error: member access within misaligned address 0x00000060ab25 for type 'struct foo', which requires 8 byte alignment 0x00000060ab25: note: pointer points here 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^