I've committed the following patch to workaround a GCC 7 bug with
debug line numbers that is causing a debug_msg.sh failure.

-cary


2017-12-01  Cary Coutant  <ccoutant@gmail.com>

gold/
        PR gold/21841
        * testsuite/debug_msg.sh: Adjust expected line numbers.
        * testsuite/odr_violation2.cc (DummyFunction): New function.