[Bug middle-end/54630] [4.8 Regression] GCC 4.8 --enable-languages=c build fails: Undefined symbols: ___cxa_guard_acquire and ___cxa_guard_release

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54630



Richard Guenther <rguenth at gcc dot gnu.org> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |NEW

   Last reconfirmed|                            |2012-09-20

          Component|libstdc++                   |middle-end

                 CC|                            |crowl at gcc dot gnu.org,

                   |                            |dnovillo at gcc dot

                   |                            |gnu.org, rguenth at gcc dot

                   |                            |gnu.org

     Ever Confirmed|0                           |1

            Summary|GCC 4.8                     |[4.8 Regression] GCC 4.8

                   |--enable-languages=c build  |--enable-languages=c build

                   |fails: Undefined symbols:   |fails: Undefined symbols:

                   |___cxa_guard_acquire and    |___cxa_guard_acquire and

                   |___cxa_guard_release        |___cxa_guard_release

   Target Milestone|---                         |4.8.0



--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-20 
11:37:04 UTC ---

Ick.  Now



  static hash_table <ssa_name_var_hash> ssa_name_hash;



appearantly has a guarded init!?



  D.38548 = __cxa_guard_acquire (&_ZGVZ17coalesce_ssa_namevE13ssa_name_hash);

  retval.1 = D.38548 != 0;

  if (retval.1 != 0) goto <D.38549>; else goto <D.38550>;

  <D.38549>:

  D.38265 = 0;

  try

    {

      hash_table<ssa_name_var_hash>::hash_table (&ssa_name_hash);

      D.38265 = 1;

      __cxa_guard_release (&_ZGVZ17coalesce_ssa_namevE13ssa_name_hash);

    }

  catch

    {

      if (D.38265 != 0) goto <D.38551>; else goto <D.38552>;

      <D.38551>:

      goto <D.38553>;

      <D.38552>:

      __cxa_guard_abort (&_ZGVZ17coalesce_ssa_namevE13ssa_name_hash);

      <D.38553>:

    }



I suppose easiest is to remove the 'static' keyword here.



Larry, can you test that?