re PR fortran/33307 (I/O read/positioning problem)

2007-09-07  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/33307
	* io/filepos.c (st_backspace): Don't truncate when already at the end
	of the file.

From-SVN: r128253

libgfortran/ChangeLog

+2007-09-07  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR libfortran/33307
+	* io/filepos.c (st_backspace): Don't truncate when already at the end
+	of the file.
+	
 2007-09-07  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/fpu-387.h: Include cpuid.h.

libgfortran/io/file_pos.c

@@ -213,7 +213,6 @@ st_backspace (st_parameter_filepos *fpp)
       u->endfile = AT_ENDFILE;
       u->flags.position = POSITION_APPEND;
       flush (u->s);
-      struncate (u->s);
     }
   else
     {