I've noticed that: $ grep -l '^M' gcc/testsuite/gnat.dg/* discr36.ads discr36_pkg.adb discr36_pkg.ads discr38.adb loop_optimization11.adb loop_optimization11_pkg.ads loop_optimization13.adb loop_optimization13.ads :-( Surely these are just normal text files, right? Can I strip the ^M from them?