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Re: [PATCH] Fix PR80222


> Does this happen on the GCC7 branch as well?  The patch just guards an
> indirect ref folding (I refrained from trying to make it correct given I
> think it's premature optimization).

No, mainline and GCC 7 branch are fine.  It appears that the folding (probably 
to BIT_FIELD_REF) is necessary to break apart the store on the 6 branch.

> I'll try to investigate on Monday if you don't beat me to it.  Feel free to
> revert the backport in the meantime.

No urgency, it's rather marginal.

> Note I think you can trigger the same bug with some source changes
> independent of the patch which means the GENERIC must be somehow invalid.

Possibly so, yes.

-- 
Eric Botcazou


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