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"defined but not used" warning for .gnu.warning symbols

From: Roland McGrath <roland at frob dot com>
To: GNU libc hackers <libc-hacker at sources dot redhat dot com>
Date: Sun, 28 Apr 2002 15:54:31 -0400 (EDT)
Subject: "defined but not used" warning for .gnu.warning symbols

I'm using gcc from today's cvs to build current libc and for every
stub_warning it gives me a warning like this one:

../sysdeps/generic/shmctl.c:35: warning: `__evoke_link_warning_shmctl' defined but not used

Should we add the `unused' attribute to the symbol?  Is there something
that guarantees us gcc won't optimize out these defns entirely?

Follow-Ups:
- Re: "defined but not used" warning for .gnu.warning symbols
  - From: Ulrich Drepper

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