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Re: ANK's PSCHED_TDIFF_SAFE change unmasked old bug (~0UL != 0xFFFFFFFF)

To: devik@xxxxxx (Martin Devera)
Subject: Re: ANK's PSCHED_TDIFF_SAFE change unmasked old bug (~0UL != 0xFFFFFFFF)
From: kuznet@xxxxxxxxxxxxx
Date: Thu, 16 May 2002 18:59:51 +0400 (MSD)
Cc: davem@xxxxxxxxxxxxx (Dave Miller), netdev@xxxxxxxxxxx
In-reply-to: <Pine.LNX.4.44.0205161543400.12674-100000@xxxxxxxxxxxx> from "Martin Devera" at May 16, 2 03:52:43 pm
Sender: owner-netdev@xxxxxxxxxxx
Hello!

> echo -e "#if ~0UL == 0xffffffff\nTST\n#endif"|gcc -E -
> echo -e "#if ~0UL == 0xffffffffffffffff\nTST\n#endif"|gcc -E -
> 
> and the second line displays TST !!

With old good 2.7.2 this worked...

Dave, do you know a theory explaining this change in gcc behavior?

Alexey

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