PR middle-end/38505
	* tree-ssa-ccp.c (may_propagate_address_into_dereference): Return
	false if ADDR's operand has incomplete type.

	Revert:
	2008-12-15  Jakub Jelinek  <jakub@redhat.com>
	PR middle-end/38505
	* tree-ssa.c (useless_type_conversion_p_1): Return
	false if inner_type is incomplete and outer_type is complete.

From-SVN: r142972