re PR libfortran/33055 (Runtime error in INQUIRE unit existance with -fdefault-integer-8)

re PR libfortran/33055 (Runtime error in INQUIRE unit existance with -fdefault-integer-8)

2007-08-26  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/33055
	* trans-io.c (create_dummy_iostat): New function to create a unique
	dummy variable expression to use with IOSTAT.
	(gfc_trans_inquire): Use the new function to pass unit number error info
	to run-time library if a regular IOSTAT variable was not given.

	PR libfortran/33055
	* io/inquire.c (inquire_via_unit):  If inquiring by unit, check for
	an error condition from the IOSTAT variable and set EXIST to false if
	there was a bad unit number.

From-SVN: r127817