PR debug/82718
	* dwarf2out.c (dw_loc_list): If crtl->has_bb_partition, temporarily
	set in_cold_section_p to the partition containing loc_list->first.
	When seeing loc_list->last_before_switch node, update secname and
	perform range_across_switch second partition handling only after that.

	* gcc.dg/debug/dwarf2/pr82718-1.c: New test.
	* gcc.dg/debug/dwarf2/pr82718-2.c: New test.

From-SVN: r254989