re PR libfortran/27575 (gfortran - does not generate error when trying to read too much data)

2006-05-16  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/27575
	* io/transfer.c (read_block):  Add check for end file condition.
	(read_block_direct): Add check for end file condition.

From-SVN: r113837

libgfortran/ChangeLog

+2006-05-16  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR libgfortran/27575
+	* io/transfer.c (read_block):  Add check for end file condition.
+	(read_block_direct): Add check for end file condition.
+
 2006-05-05  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 
 	PR libfortran/26985

libgfortran/io/transfer.c

@@ -272,6 +272,13 @@ read_block (st_parameter_dt *dtp, int *length)
 	    }
 	}
 
+      if (dtp->u.p.current_unit->bytes_left == 0)
+	{
+	  dtp->u.p.current_unit->endfile = AT_ENDFILE;
+	  generate_error (&dtp->common, ERROR_END, NULL);
+	  return;
+	}
+
       *length = dtp->u.p.current_unit->bytes_left;
     }
 
@@ -328,6 +335,13 @@ read_block_direct (st_parameter_dt *dtp, void *buf, size_t *nbytes)
 	    }
 	}
 
+      if (dtp->u.p.current_unit->bytes_left == 0)
+	{
+	  dtp->u.p.current_unit->endfile = AT_ENDFILE;
+	  generate_error (&dtp->common, ERROR_END, NULL);
+	  return;
+	}
+
       *nbytes = dtp->u.p.current_unit->bytes_left;
     }