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Re: use of %n in genmodes.c causes trouble on Vista

From: Ian Lance Taylor <iant at google dot com>
To: Matt Fago <fago at earthlink dot net>
Cc: fw at deneb dot enyo dot de, gcc at gcc dot gnu dot org
Date: 07 Jun 2007 07:41:42 -0700
Subject: Re: use of %n in genmodes.c causes trouble on Vista
References: <9196937.1181226057899.JavaMail.root@elwamui-mouette.atl.sa.earthlink.net>

Matt Fago <fago@earthlink.net> writes:

> > I would say that gets is much more dangerous than %n in printf, but
> > presumably Microsoft does not disable gets
> 
> Actually, for gets, and essentially the entire stdio.h, Visual Studio 2005 
> generates:
> 
>      warning C4996: 'gets': This function or variable may be unsafe. Consider
>      using gets_s instead. To disable deprecation, use 
>      _CRT_SECURE_NO_WARNINGS. See online help for details.

Sure, glibc issues a warning too.  But issuing a warning is very
different from disabling.  Apparently Visual Studio does not warn
about %n; it simply disables it.

Ian

References:
- Re: use of %n in genmodes.c causes trouble on Vista
  - From: Matt Fago

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