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* [Bug tree-optimization/41718]  New: internal compiler error: in add_stack_var_conflict, at cfgexpand.c:359
@ 2009-10-15 19:04 bernds_cb1 at t-online dot de
  2009-10-15 19:05 ` [Bug tree-optimization/41718] " bernds_cb1 at t-online dot de
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: bernds_cb1 at t-online dot de @ 2009-10-15 19:04 UTC (permalink / raw)
  To: gcc-bugs

The testcase for bug 38582 causes a new failure in gcc trunk, an internal
compiler error (see summary).  The revision is

Last Changed Rev: 152847
Last Changed Date: 2009-10-15 16:12:03 +0100 (Thu, 15 Oct 2009)

To reproduce, execute the following in the gcc build directory:

./f951 testcase.f90 -ffree-line-length-512 -g -ffree-form -ftime-report
-funroll-loops -O3

I'll attach the testcase to this bug as well.

I've briefly looked at it and this appears to be an integer overflow.  In
account_vars_for_block, we end up with new_sv_num == 65576, and
triangular_index overflows.


-- 
           Summary: internal compiler error: in add_stack_var_conflict, at
                    cfgexpand.c:359
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bernds_cb1 at t-online dot de
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41718


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2012-05-10 16:36 UTC | newest]

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2012-05-10 16:50 ` [Bug tree-optimization/41718] internal compiler error: in add_stack_var_conflict, at cfgexpand.c:359 bernds at gcc dot gnu.org
2009-10-15 19:04 [Bug tree-optimization/41718] New: " bernds_cb1 at t-online dot de
2009-10-15 19:05 ` [Bug tree-optimization/41718] " bernds_cb1 at t-online dot de
2009-10-16  8:53 ` rguenth at gcc dot gnu dot org
2009-10-16 16:57 ` pinskia at gcc dot gnu dot org

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