The enclosed patch fixes a subtle problem with gdb_index generation
from pubnames. Currently, if the pubnames or pubtypes section of two
consecutive input relocatable objects just happen to have the same
section index and offset, Gold will silently drop the second set. This
results in an incomplete gdb index.

The enclosed patch fixes that by extending the "pub[names|types]_read"
functions to check if the object has changed as well as the section
index and field.d

OK for mainline?

Sterling


2012-09-07  Sterling Augustine  <saugustine@google.com>

	* gdb-index.cc (Gdb_index::pubnames_read): New parameter.
	(Gdb_index::pubtypes_read): New parameter.
	(Gdb_index_info_reader::read_pubnames_and_pubtypes): Add parameters
	to calls.
	* gdb-index.h (Gdb_index): New fields pubnames_object_ and
	pubtypes_object_.