Re: Deprecated POSIX functions ?

From:

"Bo Persson" <bop@gmb.dk>

Newsgroups:

microsoft.public.vc.mfc,microsoft.public.vc.language,comp.os.ms-windows.programmer.tools.mfc

Date:

Sun, 29 Aug 2010 13:33:16 +0200

Message-ID:

<8duurnFcjeU1@mid.individual.net>

Timothy Madden wrote:

Hello

I see Visual C++ declares simple POSIX functions like mkdir(),
fileno() as deprecated (since VS 2005), they say, in favor of the
ISO C++ conformant _mkdir(), _fileno() !

How can that be ?

First, symbol names starting with an underscore are reserved for
use by the C/C++ implementation, so users should use the standard
ones, without the underscores !

Visual C++ isn't claiming to follow the Posix standard, but the C++
standard. There, mkdir() isn't a reserved name, so they shouldn't use
it. On the other hand, _mkdir() is a name the implementation is
allowed to use.

It isn't he functions that are deprecated but the non-conforming
names. :-)

Then, POSIX is a full standard for portable operating systems
interfaces, and the simple file functions there have been reliable
since ever (and the other functions, too). What do they have
against it ? What do they see as wrong with POSIX ?

You mean the ability to write programs easily portable to other
operating systems? Hardly a high priority for Microsoft!

Bo Persson