[Bug middle-end/34154] gcc 4.1.1 bug / case ranges / unsigned long long

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2007-11-20 21:27 -------
One bug is in gimplification which uses signed comparison to detect and
discard empty ranges.  But then expand breaks it again for the same reason.
And then for a different reason, that it segfaults on 

Program received signal SIGSEGV, Segmentation fault.
0x0848381b in balance_case_nodes (head=0xbfcb4454, parent=0x0)
    at /home/richard/src/trunk/gcc/stmt.c:2713
2713                    cost += COST_TABLE (TREE_INT_CST_LOW (np->high));

because np->high is 0x8ac7230489e7ffff and obviously the cost_table is not
that large.  Another case of the unsigned failure.

And that's enough to fix this PR.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2007-11-20 15:36:30         |2007-11-20 21:27:11
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34154