Re: [boost] BOOST_PRAGMA_MESSAGE?

Subject: Re: [boost] BOOST_PRAGMA_MESSAGE?
From: Edward Diener (eldiener_at_[hidden])
Date: 2017-12-03 03:08:51

On 12/2/2017 5:09 PM, Peter Dimov via Boost wrote:
> Edward Diener wrote:
>> > Use:
>> >
>> > BOOST_PRAGMA_MESSAGE( "something" )
>>
>> Shouldn't this be:
>>
>> BOOST_PRAGMA_MESSAGE( something )
> 
> Maybe. Should it be?
> 
> #pragma message does take a quoted string:
> 
>  Â Â  #pragma message( "something" )
> 
> as opposed to #warning, which doesn't:
> 
>  Â Â  #warning something
> 
> Since the macro is called PRAGMA_MESSAGE, a quoted string seemed more 
> appropriate.

The BOOST_PRAGMA_MESSAGE which you showed expands its parameter to a 
quoted string by the eventual use of the # as the stringizing operator 
in the macro expansion.