PR middle-end/15054
	* expr.c (expand_expr_real): Do not call preserve_temp_slots
	on a TARGET_EXPR temp.
	* function.c (assign_stack_temp_for_type): Set 'keep' flag for
	TARGET_EXPR temp slots.

	PR middle-end/15054
	* g++.dg/opt/pr15054.C: New test.

From-SVN: r81384