Bug#362414: abs() returns a negative number & signed types are undefined on overflow (fwd)

To: Martin Michlmayr <tbm@cyrius.com>
Cc: 362414@bugs.debian.org, Petr Salinger <Petr.Salinger@t-systems.cz>
Subject: Bug#362414: abs() returns a negative number & signed types are undefined on overflow (fwd)
From: Florian Weimer <fw@deneb.enyo.de>
Date: Sun, 16 Apr 2006 10:26:49 +0200
Message-id: <[🔎] 878xq6sz7a.fsf@mid.deneb.enyo.de>
Reply-to: Florian Weimer <fw@deneb.enyo.de>, 362414@bugs.debian.org
In-reply-to: <[🔎] 20060414113940.GF18871@deprecation.cyrius.com> (Martin Michlmayr's message of "Fri, 14 Apr 2006 13:39:40 +0200")
References: <[🔎] Pine.LNX.4.44.0604141304390.3393-100000@enigma.t-systems.cz> <[🔎] 20060414113940.GF18871@deprecation.cyrius.com>

* Martin Michlmayr:

>> Does help to compile it with "-fwrapv" ?
>
> No.

Then it's a real bug in -fwrapv support, I guess.  Without -fwrapv,
all bets are off AFAICS because the example code results in signed
integer overflow.

Reply to:

References:
- Bug#362414: abs() returns a negative number & signed types are undefined on overflow (fwd)
  - From: Petr Salinger <Petr.Salinger@t-systems.cz>
- Bug#362414: abs() returns a negative number & signed types are undefined on overflow (fwd)
  - From: Martin Michlmayr <tbm@cyrius.com>

Prev by Date: Re: Bug#350399: Azureus finally no longer needs non-free java. It works with gij.
Next by Date: Processed: Re: Bug#362840: fails to compare reverse map iterators
Previous by thread: Bug#362414: abs() returns a negative number & signed types are undefined on overflow (fwd)
Next by thread: Bug#362414: abs() returns a negative number & signed types are undefined on overflow (fwd)
Index(es):
- Date
- Thread