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[Bug tree-optimization/29921] [4.3 regression]: internal compiler error: in set_lattice_value, at tree-ssa-ccp.c:437
- From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 22 Nov 2006 23:43:40 -0000
- Subject: [Bug tree-optimization/29921] [4.3 regression]: internal compiler error: in set_lattice_value, at tree-ssa-ccp.c:437
- References: <bug-29921-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #11 from rakdver at gcc dot gnu dot org 2006-11-22 23:43 -------
(In reply to comment #9)
> Is HONOR_NANS missing somwhere?
Not really, it is basically the same problem as the one with -0 -- for some
time, ccp may believe that there might be a NaN (due to division by zero in
case end were 0) even in this completely NaN-free program, and we end up
changing the value of NaN in the lattice to a different constant (0). I am
working on the fix.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29921