------- Comment #3 from kargl at gcc dot gnu dot org 2007-04-30 19:17 ------- Mark,
Section 3.1 of the Fortran 95 standard defines the "Fortran Character Set". tab is not a member of this set whereas space (or blank) is. One then needs to read Section 3.3.2 that covers fixed-form source code. 3.3.2.4 Fixed form statements A label, if present, shall occur in character positions 1 through 5 of the first line of a statement; otherwise, positions 1 through 5 shall be blank. Blanks may appear anywhere within a label. A statement following a ";" on the same line shall not be labeled. Character positions 1 through 5 of any continuation lines shall be blank. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31765
