Re: Is -fno-strict-aliasing still needed?

From: Andreas Schwab (
Date: Tue Feb 11 2003 - 04:12:31 EST

Horst von Brand <> writes:

|> Art Haas <> said:
|> > I ask because I've just built a kernel without using that flag -
|> > linus-2.5 BK from this morning, probably missing the 2.5.60 release by
|> > a few hours.
|> The problem with strict aliasing is that it allows the compiler to assume
|> that in:
|> void somefunc(int *foo, int *bar)
|> foo and bar will _*never*_ point to the same memory area

This is wrong. Only if they are declared restrict.


Andreas Schwab, SuSE Labs,
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg
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