Committed as 'obvious' in revision 257930.

Cheers

Paul

2018-02-23  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/83148
    * trans-const.c : Clean up some whitespace issues.
    * trans-expr.c (gfc_conv_initializer): If an iso_c_binding
    derived type has a kind value of zero, set it to the default
    integer kind.

2018-02-23  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/83148
    * gfortran.dg/class_68.f90: New test.