http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55117
--- Comment #2 from pmarguinaud at hotmail dot com 2012-10-29 14:34:02 UTC --- $ gfortran bat.F90 $ ./a.out At line 33 of file bat.F90 (unit = 4, file = 'NAMELIST') Fortran runtime error: Internal namelist read error I tried 4.6.1, 4.6.2 and latest snapshot of 4.7. All the same.