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[Bug tree-optimization/53265] Warn when undefined behavior implies smaller iteration count
- From: "manu at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 11 Mar 2013 16:42:00 +0000
- Subject: [Bug tree-optimization/53265] Warn when undefined behavior implies smaller iteration count
- Auto-submitted: auto-generated
- References: <bug-53265-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53265
Manuel LÃpez-IbÃÃez <manu at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |manu at gcc dot gnu.org
--- Comment #11 from Manuel LÃpez-IbÃÃez <manu at gcc dot gnu.org> 2013-03-11 16:42:00 UTC ---
(In reply to comment #8)
> Untested patch. Not sure about the warning wording, plus no idea how to call
> the warning option (-Wnum-loop-iterations, -Wundefined-behavior-in-loop,
> something else?), whether to enable it by default, or just for -Wall.
If the rate of false positives is expected to be low, then I would suggest
enabled by default, otherwise, I would say Wall.