Building mozilla from CVS (using egcs-1.12-12), I've been
trying to set breakpoints and inspect code in a certain
function.  Specifically, I'm trying to play with mozilla's
nsEventStateManager::CheckForAndDispatchClick in
mozilla/layout/events/nsEventStateManager.cpp.

If I do "list nsEventStateManager::CheckForAndDispatchClick"
from gdb-4.18-4, I see the following (incorrect) output:

477	        }
478	      }
479	    }
480	  }
481	  return ret;
482	}
483
484	NS_IMETHODIMP
485	nsEventStateManager::SetPresContext(nsIPresContext*
aPresContext)
486	{

If I revert back to gdb-4.17.0.11-6 (as shipped with RH6),
that same command produces the following (correct) output:

816
817     NS_IMETHODIMP
818
nsEventStateManager::CheckForAndDispatchClick(nsIPresContext&
aPresContext,
819
nsMouseEvent *aEvent,
820
nsEventStatus& aStatus)
821     {
822       nsresult ret = NS_OK;
823       nsMouseEvent event;
824       nsCOMPtr<nsIContent> mouseContent;
825       PRBool fireClick = PR_FALSE;

If you want help building mozilla or otherwise reproducing
this, I can usually be found on irc.mozilla.org in #mozilla.