[Bug libfortran/37839] New: st_parameter_dt has unwanted padding, is out of sync with compiler

["sje at cup dot hp dot com" <gcc-bugzilla at gcc dot gnu dot org>]

On systems where GFC_IO_INT is 8 bytes and requires 8 byte alignment the
st_parameter_dt structure may be out of sync between the fortran library and
compiler because the common field of st_parameter_dt is 28 bytes long (if
pointers and ints are 4 bytes each) and the next field (rec) is of type
GFC_IO_INT which is 8 bytes if 8 byte ints are supported.  The padding between
common and rec is not accounted for in the compiler when accessing the
structure.

On ia64-*-hpux* this cause gfortran.dg/f2003_io_[14567].f03 to fail in 32 bit
mode.


-- 
           Summary: st_parameter_dt has unwanted padding, is out of sync
                    with compiler
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: libfortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sje at cup dot hp dot com
GCC target triplet: ia64-*-hpux*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37839