[PATCH] Make --start-lib/--end-lib block on previous add symbols tasks

[Neil Vachharajani <nvachhar at google dot com>]

This patch fixes a problem where when using --start-lib/--end-lib the
linker would report that certain symbols could not be found.  The
problem was that the add symbols task for a group of object files
surrounded by --start-lib/--end-lib was not appropriately waiting for
previous add symbols tasks.  This patch uses an Unblock_token to
properly serialize the execution.

OK to apply?  Tested on x86_64 Linux.

ChangeLog:

        gold/
        * readsyms.cc (Read_symbols::do_lib_group): Block
add_lib_group_symbols on this->this_blocker.

-- 
Neil Vachharajani
Google
650-214-1804

Attachment: gold_start_end_lib_patch.txt
Description: Text document