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Re: [PR19351, C++] Fix heap overflow in operator new[]

From: Florian Weimer <fw at deneb dot enyo dot de>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: Richard Guenther <richard dot guenther at gmail dot com>, gcc-patches at gcc dot gnu dot org, Jason Merrill <jason at redhat dot com>
Date: Mon, 07 Feb 2011 22:27:14 +0100
Subject: Re: [PR19351, C++] Fix heap overflow in operator new[]
References: <873a1eydec.fsf@mid.deneb.enyo.de> <87d3noemb8.fsf@mid.deneb.enyo.de> <87sjw7igbw.fsf@mid.deneb.enyo.de> <4D4DCD34.4050201@codesourcery.com> <87bp2pfshg.fsf@mid.deneb.enyo.de> <AANLkTinT3yPDGtW0_Vxky1mgmfnyPdDfjZZ4npCOYQnm@mail.gmail.com> <4D4F8CD3.1040405@codesourcery.com> <87tygg1hqs.fsf@mid.deneb.enyo.de>

* Florian Weimer:

>>>> Competing compilers have performed the check for several years.
>>
>> Which ones?
>
> Microsoft and HP have announced fixes.  I think Oracle has addressed
> it, too, but I would have to check again.

It turns out that this was overly optimistic.  Oracle Solaris Studio
12.2 does not emit overflow checks.  Neither do Intel's compiler
(version 11), nor Open64.

References:
- Re: [PR19351, C++] Fix heap overflow in operator new[]
  - From: Florian Weimer
- Re: [PR19351, C++] Fix heap overflow in operator new[]
  - From: Mark Mitchell
- Re: [PR19351, C++] Fix heap overflow in operator new[]
  - From: Florian Weimer
- Re: [PR19351, C++] Fix heap overflow in operator new[]
  - From: Richard Guenther
- Re: [PR19351, C++] Fix heap overflow in operator new[]
  - From: Mark Mitchell
- Re: [PR19351, C++] Fix heap overflow in operator new[]
  - From: Florian Weimer

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