Re: [boost] [msvc] #warning preprocessor directive

Subject: Re: [boost] [msvc] #warning preprocessor directive
From: Peter Dimov (lists_at_[hidden])
Date: 2017-10-17 16:24:59

Beman Dawes wrote:

> There is a hack on Stackoverflow 
> https://stackoverflow.com/questions/5966594 to use a macro cascade to 
> solve the problem.

Yes, one can always use

#define STR(x) STR2(x)
#define STR2(x) #x

#pragma message( __FILE__ "(" STR(__LINE__) "): warning: " "#warning foo" )

or even

#define BOOST_MESSAGE(msg) message( __FILE__ "(" STR(__LINE__) "): warning: 
" "#warning " #msg )

#pragma BOOST_MESSAGE(foo)

but that's not the point, is it. :-)