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Re: Integer overflow in operator new

From: Andreas Schwab <schwab at suse dot de>
To: "Dave Korn" <dave dot korn at artimi dot com>
Cc: "'Florian Weimer'" <fw at deneb dot enyo dot de>, "'Joe Buck'" <Joe dot Buck at synopsys dot COM>, "'Ross Ridge'" <rridge at csclub dot uwaterloo dot ca>, <gcc at gcc dot gnu dot org>
Date: Sun, 08 Apr 2007 14:57:40 +0200
Subject: Re: Integer overflow in operator new
References: <20070407220535.DC5F4740FC@caffeine.csclub.uwaterloo.ca> <20070407223745.GB13276@synopsys.com> <87d52fyzfk.fsf@mid.deneb.enyo.de> <007201c779d5$8d91dc50$2e08a8c0@CAM.ARTIMI.COM>

"Dave Korn" <dave.korn@artimi.com> writes:

>   Wouldn't using -ftrapv do what we want?

-ftrapv only modifies signed arithmetic.  Unsigned arithmetic never traps.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Follow-Ups:
- RE: Integer overflow in operator new
  - From: Dave Korn

References:
- Re: Integer overflow in operator new
  - From: Ross Ridge
- Re: Integer overflow in operator new
  - From: Joe Buck
- Re: Integer overflow in operator new
  - From: Florian Weimer
- RE: Integer overflow in operator new
  - From: Dave Korn

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