https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96486
--- Comment #19 from Susi Lehtola <jussilehtola at fedoraproject dot org> --- (In reply to Steve Kargl from comment #17) > On Thu, Aug 06, 2020 at 08:33:12PM +0000, jussilehtola at fedoraproject dot > org wrote: > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96486 > > > > --- Comment #16 from Susi Lehtola <jussilehtola at fedoraproject dot org> > > --- > > Yes, then I installed missing libgfortran debuginfos and the backtrace > > shortened to > > > > #0 0x401267 in zerolen_value > > at /tmp/readvar2.f90:17 > > #1 0x4012c4 in main > > at /tmp/readvar2.f90:22 > > > > I cannot reproduce the issue. It already was reproduced in comment #9? The issue is not that the environment variable has not been set, but rather that it is set to an empty string.