re PR rtl-optimization/85302 (ICE in size_of_loc_descr, at dwarf2out.c:1771 on i686...

re PR rtl-optimization/85302 (ICE in size_of_loc_descr, at dwarf2out.c:1771 on i686-linux-gnu)

	PR debug/85302
	* dwarf2out.c (skip_loc_list_entry): Don't call size_of_locs if
	SIZEP is NULL.
	(output_loc_list): Pass address of a dummy size variable even in the
	locview handling loop.
	(index_location_lists): Add comment on why skip_loc_list_entry can't
	call size_of_locs.

	* g++.dg/debug/dwarf2/pr85302.C: New test.

From-SVN: r259311