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Re: [PATCH] Add configure flag for operator new (std::nothrow)

From: Jonathan Wakely <jwakely at redhat dot com>
To: Daniel Gutson <daniel dot gutson at tallertechnologies dot com>
Cc: Pedro Alves <palves at redhat dot com>, Jonathan Wakely <jwakely dot gcc at gmail dot com>, Martin Sebor <msebor at gmail dot com>, Aurelio Remonda <aurelio dot remonda at tallertechnologies dot com>, libstdc++ <libstdc++ at gcc dot gnu dot org>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Date: Mon, 22 Feb 2016 15:58:30 +0000
Subject: Re: [PATCH] Add configure flag for operator new (std::nothrow)
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On 19/02/16 18:56 -0300, Daniel Gutson wrote:

On Mon, Nov 16, 2015 at 3:56 PM, Pedro Alves <palves@redhat.com> wrote:

On 11/10/2015 01:10 PM, Jonathan Wakely wrote:

On 06/11/15 09:59 +0000, Pedro Alves wrote:

On 11/06/2015 01:56 AM, Jonathan Wakely wrote:

On 5 November 2015 at 23:31, Daniel Gutson

The issue is, as I understand it, to do the actual work of operator
new, i.e. allocate memory. It should force
us to copy most of the code of the original code of operator new,
which may change on new versions of the
STL, forcing us to keep updated.


It can just call malloc, and the replacement operator delete can call free.

That is very unlikely to need to change (which is corroborated by the
fact that the default definitions in libsupc++ change very rarely).


Or perhaps libsupc++ could provide the default operator new under
a __default_operator_new alias or some such, so that the user-defined
replacement can fallback to calling it.  Likewise for op delete.


That could be useful, please file an enhancement request in bugzilla
if you'd like that done.


I'll leave that to Daniel/Aurelio.


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69879

Please assign it to Aurelio.


Done, I will look forward to seeing some patches for the next stage 1.

Thanks!

References:
- Re: [PATCH] Add configure flag for operator new (std::nothrow)
  - From: Daniel Gutson

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