Re: [Boost-users] [boost] compilation warnings questions by a newbee

Subject: Re: [Boost-users] [boost] compilation warnings questions by a newbee
From: Marshall Clow (mclow.lists_at_[hidden])
Date: 2011-12-08 19:04:22

On Dec 8, 2011, at 3:38 PM, Rai, Neeraj wrote:

> Hi Vincent,
>  
> You are right - the -Wconversion causes it to warn on that line. Is there any way to fix it ?
> 2 reasons : a) we are not allowed to have warnings in our code
>                   b) I am going to miss the real warnings about conversion if I let this pass.
> I just tried 1.48.0 with g++ 4.4.5 and 4.6 and same results. Without -Wconversion it is clean, but that is not an option for me.

I just tried again with -Wconversion (and boost 1.48). No warnings.

> Not sure what is PO ?

I think he meant "OP" - original poster.

> From: boost-users-bounces_at_[hidden] [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Vicente J. Botet Escriba
> Sent: Thursday, December 08, 2011 6:24 PM
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] [boost] compilation warnings questions by a newbee
> 
> Le 09/12/11 00:11, Marshall Clow a écrit :
>> 
>> On Dec 8, 2011, at 2:58 PM, Rai, Neeraj wrote:
>> 
>>> Hi,
>>>  
>>> I am writing my first boost program and having trouble with the compiler warning against boost 1.44.0.
>>> Is there any way to get rid of those warnings so I can focus on real warnings in my code ?
>>> The gist of warning is :
>>>         boost_1_44_0/include/boost/mpl/aux_/integral_wrapper.hpp:73:96: warning: the result of the conversion is unspecified because '-0x00000000000000001' is outside the range of type 'boost::numeric::udt_builtin_mixture_enum' [-Wconversion]
>>>  
>>> Any help or pointers are appreciated.
>>> Neeraj
>>>  
>>> ====== The following program is a cut down version of my code, just declares sregex
>>> #include <iostream>
>>> #include <boost/xpressive/xpressive.hpp>
>>>  
>>> int main (int _argc, const char** _argv)
>>> {
>>>   std::cout << "argc=" << _argc << " argv=" << _argv << std::endl;
>>>   using namespace boost::xpressive;
>>>   std::string keyword("");
>>>   sregex const re(sregex::compile(keyword, sregex::icase));
>>> }
>> 
>> 
>> Just tried this with both gcc 4.2.1 and clang 3.0 using the current Boost (1.48), and it worked fine.
>> No warnings, even with -Wall
>> 
> The PO is using -Wconversion
> 
> Best,
> Vicente

-- Marshall

Marshall Clow     Idio Software   <mailto:mclow.lists_at_[hidden]>

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