Re: [Boost-users] conflicting intmax_t definitions - Boost 1.53 and gcc 4.8 incompatibility?

Subject: Re: [Boost-users] conflicting intmax_t definitions - Boost 1.53 and gcc 4.8 incompatibility?
From: Nate Finch (nate.finch_at_[hidden])
Date: 2014-01-20 07:32:51

Yes, there are some using namespace boost statements, and some of them are
before some includes... but why would that suddenly break when it was
working before I upgraded?  Is boost now defining its own intmax_t (and
other such tings, like uint64_t) where it wasn't before?

On Sun, Jan 19, 2014 at 11:03 AM, John Maddock <john_at_[hidden]>wrote:

> I recently upgraded to Ubuntu Trusty Tehr, and now the C++ project I'm
>> working on won't build.
>>
>> It looks like the stdlib and Boost aren't working nicely together for some
>> reason. A bunch of typedefs are conflicting between the two, below is one
>> of
>> the errors, where intmax_t is getting defined in two places. I'm not sure
>> what changed, but I now have gcc (Ubuntu/Linaro 4.8.2-14ubuntu2) 4.8.2 and
>> boost Version: 1.53.0.0ubuntu2
>>
>> Here's an example error message:
>>
>> /usr/include/inttypes.h:290:8: error: reference to ‘intmax_t’ is ambiguous
>> extern intmax_t imaxabs (intmax_t __n) __THROW __attribute__
>> ((__const__));
>>    ^
>> In file included from
>> /usr/lib/gcc/x86_64-linux-gnu/4.8/include/stdint.h:9:0,
>>             from /usr/include/inttypes.h:27,
>>             from src/uint256.h:11,
>>             from src/key.h:12,
>>             from src/crypter.h:8,
>>             from src/keystore.h:8,
>>             from src/script.h:14,
>>             from src/script.cpp:11:
>> /usr/include/stdint.h:134:19: note: candidates are: typedef long int
>> intmax_t
>> typedef long int  intmax_t;
>>               ^
>> In file included from /usr/include/boost/math_fwd.hpp:12:0,
>>             from /usr/include/boost/math/common_factor_ct.hpp:13,
>>             from /usr/include/boost/variant/variant.hpp:44,
>>             from /usr/include/boost/variant.hpp:17,
>>             from src/script.h:12,
>>             from src/script.cpp:11:
>> /usr/include/boost/cstdint.hpp:306:50: note:                 typedef
>> boost::long_long_type boost::intmax_t
>>  typedef  ::boost::long_long_type            intmax_t;
>>
>>
>> Any help would be much appreciated. I'm fine with downgrading something,
>> I'm
>> just not sure what to downgrade.... or if there's an actual fix, that's
>> cool
>> too.
>>
>
> The two types are in different namespaces so I'm not sure why the Boost
> one would be found at all by GCC's headers... maybe you have a "using
> namespace boost" at global scope and before your #includes are complete?
>
> John.
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users