[Bug middle-end/32455] [4.1/4.2/4.3 regression] ICE with modified va_list

["reichelt at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #2 from reichelt at gcc dot gnu dot org  2007-12-27 20:38 -------
Confirmed. Here's a reduced testcase that crashes when compiled under
i686-pc-linux-gnu:

=========================================
typedef double* va_list;

void __builtin_va_start(va_list, ...);

void foo(const char* s, ...)
{
  va_list v;
  __builtin_va_start(v, s);
}
=========================================

bug.c: In function 'foo':
bug.c:8: internal compiler error: in convert_move, at expr.c:371
Please submit a full bug report, [etc.]

I don't know whether messing around with va_list and __builtin_va_start
is allowed or not. Btw, with
  typedef void* va_list;
instead of
  typedef double* va_list;
I get a different ICE:

bug.c: In function 'foo':
bug.c:8: internal compiler error: in simplify_subreg, at simplify-rtx.c:4918
Please submit a full bug report, [etc.]

Btw, the ICE appeared in GCC 4.0.0 (GCC 3.3.x crashed, too).


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
          Component|target                      |middle-end
     Ever Confirmed|0                           |1
 GCC target triplet|hppa2.0w-hp-hpux11.11       |
           Keywords|                            |ice-on-valid-code, monitored
   Last reconfirmed|0000-00-00 00:00:00         |2007-12-27 20:38:18
               date|                            |
            Summary|internal compiler error: in |[4.1/4.2/4.3 regression] ICE
                   |convert_move, at expr.c:362 |with modified va_list
   Target Milestone|---                         |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32455