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Message-ID: <CAHs-p=j-itEb6FVQHY0TSiiRGAwznjm+bEBnFeO8_R1TUQHNaA@mail.gmail.com>
Date: Fri, 6 Jun 2025 01:23:14 +0100
From: Andy Caldwell <andy.m.caldwell@...glemail.com>
To: musl@...ts.openwall.com
Cc: Rich Felker <dalias@...c.org>, David Steele <david@...ackrest.org>, noloader@...il.com
Subject: Re: Sign conversion warning in FD_ISSET()
> > There probably is some way to get it right with clever use of the
> > ternary operator but I haven't come up with anything in the first few
> > seconds thinking about it.
> >
> > Rich
Yes, the ternary operator can be used to create a C89-compatible
version (this allows anything coercible to an `int` or an `unsigned`,
so it mostly only refuses pointers and structures).
#define SOCKET_TO_UNSIGNED(s) ((unsigned)(1?(s):0))
Andy
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