Re: [Boost-users] [Boost.Test 1.34] Multipleinstancesofunit_test_log_t singleton

From: Gennadiy Rozental (gennadiy.rozental_at_[hidden])
Date: 2007-05-23 13:55:46

"Peter Dimov" <pdimov_at_[hidden]> wrote in message 
news:019d01c79d5d$10083080$6407a80a_at_pdimov2...
> Gennadiy Rozental wrote:
>>> "Kolya" <wxkolya_at_[hidden]> wrote in message
>>> news:1f5259800705230242hb812523mc864b34c6d35e145_at_mail.gmail.com...
>>> Hi, All!
>>>
>>> I am using Boost.Test library in my own application and I have
>>> included boost/test/unit_test.hpp in many my cpp-files.
>>> When I used boost version 1.33.1 all works fine. But in version 1.34
>>> I have following compiler error:
>>>
>>> file1.obj : error LNK2005: "class
>>> unit_test_log_t::boost::unit_test_log_t &
>>> boost::unit_test::`anonymous namespace'::unit_test_log"
>>> (?unit_test_log@? A0xa35d3712_at_unit_test_at_boost@@3AAVunit_test_log_t_at_23 
>>> @A)
>>> already
>>> defined in file2.obj
>>
>> Looks liek clear compiler bug. Anounimus namespace is used
>> specifically to avoid duplicate symbols.
>
> It's very common for compilers to become confused when an anonymous
> namespace resides in a precompiled header.

Well. Don't put Boost.Test header in precompiled headers set, if you know 
the issue. unit_test_hpp shouldn't slow down compilation.

Gennadiy