On Tue, Sep 12, 2017 at 04:09:41PM +0200, Richard Biener wrote:
>
> The following "fixes" PR82129 (hides the issue). It folds
> writes from uninitialized data to CLOBBERs:
>
> - *h5_26(D) = tv_24(D);
> + *h5_26(D) ={v} {CLOBBER};
>
> Bootstrap & regtest running on x86_64-unknown-linux-gnu.
Won't that affect -W{,maybe-}unitialized a lot?
> 2017-09-12 Richard Biener <rguent...@suse.de>
>
> PR tree-optimization/82129
> * gimple-fold.c (fold_gimple_assign): Fold stores from undefined
> values to clobbers.
>
> * gcc.dg/torture/pr82129.c: New testcase.
Jakub
