gcc/ChangeLog:

	* tree-ssa-strlen.c (get_addr_stridx): Add argument and use it.
	(handle_store): Pass argument to get_addr_stridx.

gcc/testsuite/ChangeLog:

	* gcc.dg/strlenopt-89.c: New test.
	* gcc.dg/strlenopt-90.c: New test.
	* gcc.dg/Wstringop-overflow-20.c: New test.

From-SVN: r277546