Re: [boost] [EXTERNAL] Re: [boost-mpl] -Wall -Werror issue

Subject: Re: [boost] [EXTERNAL] Re: [boost-mpl] -Wall -Werror issue
From: Belcourt, Kenneth (kbelco_at_[hidden])
Date: 2012-11-26 21:35:58

On Nov 26, 2012, at 5:47 PM, Mathias Gaunard wrote:

> On 27/11/12 01:38, Belcourt, Kenneth wrote:
>> 
>> On Nov 26, 2012, at 5:22 PM, Mathias Gaunard wrote:
>> 
>>> On 27/11/12 00:55, Belcourt, Kenneth wrote:
>>>> Hi,
>>>> 
>>>> This code generates sign / unsigned compare warning with -Wall, could this please be cleaned up?
>>>> 
>>>>     enum {
>>>>         n =
>>>> # if defined(__EDG_VERSION__)
>>>>            aux::dependent_unsigned<T>::value > -1
>>>> # else
>>>>            sizeof(T) > -1
>>>> # endif
>>>>         };
>>>> 
>>>> It appears that sizeof(T) > -1 yields zero for EDG, Gcc and Clang so perhaps this is just older (unused) code?
>>> 
>>> The code in question is in print.hpp
>>> Its purpose is to emit warnings.
>> 
>> Good to know it's successfully achieved it's objective.  Our project need to compile -Wall -Werror and we want to use Boost, can this be done without local modifications to the Boost installation?
> 
> print is a debugging tool, used to print messages at compile-time using warnings.

Ah, that's what I need to know, thanks Mathias.

> If you don't want to emit such warnings, just don't use it.
> 
> 
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