PR debug/47510

gcc/

	PR debug/47510
	* dwarf2out.c (strip_naming_typedef): Factorize out of ...
	(lookup_type_die_strip_naming_typedef): ... here.
	(get_context_die): Use it.
	(gen_typedef_die): Add a DW_AT_{,MIPS_}linkage_name attribute to
	the anonymous struct named by the naming typedef.

gcc/testsuite/

        PR debug/47510
	* g++.dg/debug/dwarf2/typedef6.C: New test.

From-SVN: r171073