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Date: Wed, 13 Jun 2012 10:56:03 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: FreeSec crypt()
On Wed, Jun 13, 2012 at 05:18:07PM +0400, Solar Designer wrote:
> > Note that even if the behavior were defined, this code seems to have
> > different behavior for high bytes depending on the signedness of char.
>
> Do you mean high bits (not bytes)?
"High bytes" is a poorly defined term I used to mean bytes with their
high bit set, or bytes outside the ASCII range, etc.
> Why would signedness of char matter
> if the behavior of the signed char overflowing left shift were defined?
Well if char is signed, (char)0x80 << 1 is -256. If char is unsigned,
(char)0x80 << 1 is 256.
Rich
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