Tabs in source code are not standard Fortran but are accepted by many compilers. Gfortran should at least warn about the use of tabs when invoked with the -std=f95 option. The Compaq Visual Fortran and Intel compilers do so.
-- Summary: no warning about tabs with std=f95 option Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: vivekrao4 at yahoo dot com CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18537