http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58813
--- Comment #5 from Vittorio Zecca <zeccav at gmail dot com> --- I did not know about MALLOC_PERTURB_ I just put in my .bashrc profile export MALLOC_PERTURB_=$(($RANDOM % 255 + 1)) gfortran fails in different places if the input file is .f or .f90 As .f I get bus error at resolve.c:11510 'gfc_notify_std (GFC_STD_F2003, "Procedure "', as .f90 I get segmentation fault at error.c:310 "error_string (f->filename);"