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Re: PATCH to control #pragma once warning with -Wno-deprecated

From: Jason Merrill <jason at redhat dot com>
To: Neil Booth <neil at daikokuya dot co dot uk>
Cc: Mark Mitchell <mark at codesourcery dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, dj at redhat dot com
Date: Tue, 28 Jan 2003 17:27:34 -0500
Subject: Re: PATCH to control #pragma once warning with -Wno-deprecated
References: <wvlel6xm6fb.fsf@prospero.boston.redhat.com><77070000.1043782330@warlock.codesourcery.com><20030128215541.GA19774@daikokuya.co.uk>

On Tue, 28 Jan 2003 21:55:41 +0000, Neil Booth <neil@daikokuya.co.uk> wrote:

> Mark Mitchell wrote:-
>
>> >Incidentally, apparently #pragma once shows up in VC++ headers, which
>> >would explain why people don't want to just fix their code.
>> 
>> Makes sense.
>
> Last time we discussed this DJ said that the MS headers all have header
> guards, and that #pragma once is protected by MSVER macros, so I doubt
> this is the reason someone wants it.

This does seem to be the reason people want gcc to shut up about it; I
suspect that ignoring it would be fine.  Apparently the Visual Studio IDE
adds it to source files without them asking.

Jason

References:
- PATCH to control #pragma once warning with -Wno-deprecated
  - From: Jason Merrill
- Re: PATCH to control #pragma once warning with -Wno-deprecated
  - From: Mark Mitchell
- Re: PATCH to control #pragma once warning with -Wno-deprecated
  - From: Neil Booth

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