[Bug c/48799] New: ice in pred_chain_length_cmp

[Bug c/48799] New: ice in pred_chain_length_cmp

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48799

           Summary: ice in pred_chain_length_cmp
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dcb314@hotmail.com


Created attachment 24122
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24122
C source code

I just tried to compile the attached C code with the latest 4.7 snapshot
20110423 on a Fedora Linux x86_64 box.

The compiler said

hdp_gr.c: In function 'dgr':
hdp_gr.c:1105:1: internal compiler error: vector VEC(use_pred_info_t,base)
index domain error, in pred_chain_length_cmp at tree-ssa-uninit.c:1624
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Flags -Wall -O2 required.

[Bug tree-optimization/48799] [4.7 Regression] ice in pred_chain_length_cmp

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48799

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |davidxl at gcc dot gnu.org
          Component|c                           |tree-optimization
   Target Milestone|---                         |4.7.0
            Summary|ice in                      |[4.7 Regression] ice in
                   |pred_chain_length_cmp       |pred_chain_length_cmp

[Bug tree-optimization/48799] [4.7 Regression] ice in pred_chain_length_cmp

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48799

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-07-24 00:54:43 UTC ---
Works for me with 
GNU C (GCC) version 4.7.0 20110723 (experimental) [trunk revision 176707]
(x86_64-unknown-linux-gnu)

hdp_gr.c: In function ‘dumpgr_usage’:
hdp_gr.c:31:19: warning: unused parameter ‘argc’ [-Wunused-parameter]
hdp_gr.c: In function ‘dgr’:
hdp_gr.c:1267:13: warning: ‘fp’ may be used uninitialized in this function
[-Wmaybe-uninitialized]

[Bug tree-optimization/48799] [4.7 Regression] ice in pred_chain_length_cmp

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48799

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-02 14:05:14 UTC ---
Works for me as well.  Assuming fixed.