https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97927
--- Comment #12 from Tobias Burnus <burnus at gcc dot gnu.org> --- (In reply to Matthias Klose from comment #10) > seen again with 20210227 I tried it with the attached file and the build.sh but calling gfortran directly w/o mpif90 wrapper. That's with --enable-checking=yes,extra,rtl and: mainline: 4d66685e49d20e0c7a87c5fa0757c7eb63ffcdaa (Fri Mar 5 05:25:54 2021 -0800) GCC 10: c85c24099b28f7af907466af2c1b73da9455368c (Fri Mar 5 12:45:41 2021 +0100) That's on x86_64-gnu-linux (Ubuntu 14.04.4 LTS). It did compile without any problems; I also tried running it with valgrind and did not spot anything there, either. Looking at the Elk webpage, also no gfortran-related issues are reported threre.