re PR fortran/35840 (ICE for character expression in I/O specifier)

re PR fortran/35840 (ICE for character expression in I/O specifier)

2008-10-31  Mikael Morin  <mikael.morin@tele2.fr>

	PR fortran/35840
	* expr.c (gfc_reduce_init_expr): New function, containing checking code
	from gfc_match_init_expr, so that checking can be deferred.
	(gfc_match_init_expr): Use gfc_reduce_init_expr.
	* io.c (check_io_constraints): Use gfc_reduce_init_expr instead of
	checking that the expression is a constant.
	* match.h (gfc_reduce_init_expr): Prototype added.

2008-10-31  Mikael Morin  <mikael.morin@tele2.fr>

	PR fortran/35840
	* gfortran.dg/write_check4.f90: New test.

From-SVN: r141497