2009-11-24  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/42154
	* tree-sra.c (struct access): Added comments.
	(sra_modify_expr): Build references to the old aggregate with
	build_ref_for_offset instead of reusing access->expr.
	(load_assign_lhs_subreplacements): Likewise.

	* testsuite/gcc.c-torture/execute/pr42154.c: New test.

From-SVN: r154493