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[Bug middle-end/61409] [4.9/4.10 regression] -Wmaybe-uninitialized false-positive with -O2
- 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: Wed, 04 Jun 2014 16:03:28 +0000
- Subject: [Bug middle-end/61409] [4.9/4.10 regression] -Wmaybe-uninitialized false-positive with -O2
- Auto-submitted: auto-generated
- References: <bug-61409-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61409
--- Comment #5 from Manuel LÃpez-IbÃÃez <manu at gcc dot gnu.org> ---
(In reply to Paul Eggert from comment #0)
> Also, mw was used in the
> previous line, with no warning.
I think uinit uses are computed walking the CFG backwards, and only one use is
reported per variable.