re PR libfortran/25598 (gfortran - Fortran runtime error: Invalid argument)

2005-01-05  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/25598
	* gfortran.dg/backspace_3.f: New test.
	* gfortran.dg/backspace_4.f: New test.

From-SVN: r109406

gcc/testsuite/ChangeLog

 2005-01-05  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
+	PR fortran/25598
+	* gfortran.dg/backspace_3.f: New test.
+	* gfortran.dg/backspace_4.f: New test.
+
+2005-01-05  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
 	PR fortran/24268
 	* gfortran.dg/fmt_white.f: Update test.
 

gcc/testsuite/gfortran.dg/backspace_3.f

+! { dg-do run }
+! PR25598 Error on repeated backspaces.
+! Derived from example given in PR by Dale Ranta
+! Contributed by Jerry DeLisle  <jvdelisle@gcc.gnu.org> 
+       integer data
+       data=-1
+       open(unit=11,status='scratch',form='unformatted')
+       write(11)data
+       read(11,end=        1000 )data
+       call abort()
+ 1000  continue
+       backspace 11
+       backspace 11
+       backspace 11
+       read(11,end=        1001 )data
+ 1001  continue
+       if (data.ne.-1) call abort
+       close(11)
+       end
+

gcc/testsuite/gfortran.dg/backspace_4.f

+! { dg-do run }
+! PR25598 Error on repeated backspaces.
+! Derived from example given in PR by Dale Ranta
+! Contributed by Jerry DeLisle  <jvdelisle@gcc.gnu.org> 
+       integer data
+       data=-1
+       open(unit=11,status='scratch',form='unformatted')
+       write(11)data
+       read(11,end=        1000 )data
+       call abort()
+ 1000  continue
+       backspace 11
+       backspace 11
+       read(11,end=        1001 )data
+ 1001  continue
+       if (data.ne.-1) call abort
+       close(11)
+       end