[Bug ada/47056] [4.6 Regression] 10 Ada ACATS tests fail to link with undefined reference on ia64-linux

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47056

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.12.28 15:21:44
            Version|unknown                     |4.6.0
     Ever Confirmed|0                           |1

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-12-28 15:21:44 UTC ---
> I took one of the test and it fails to link at -O2 and -O1 but works and PASS
> at -O0, see below. So I'm assuming some optimization is creating the issue,
> any idea on what to look for?

Probably a hole related to descriptors in reachability analysis.  The dump file
.043i.whole-program contains:

Reclaiming functions: P.Objectdf P.Objectda P P."=" P.Objectso P.Objectsw
P.Objectsr P