Walter,

One of the boost.test problems is with linking a lib. The creation of the lib triggers this warning:
Warning: Public '?char_type@?1??print_escaped@unit_test@boost@@YAXAAV?$basic_ostream@std@DV?$char_traits@std@D@1@@std@@V?$basic_
cstring@unit_test@boost@_OD@23@@Z23@4V?$fixed_mapping@unit_test@boost@DPBDU?$less@std@D@std@@@23@A' already in library, redefinition ignored.

and the link error using the lib this:
Error 1: Previous Definition Different : ?char_type@?1??print_escaped@unit_test@boost@@YAXAAV?$basic_ostream@std@DV?$char_traits@std@D@1@@std@ (void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??prin
t_escaped &))

unmangle.exe produces the following for the two mentioned above:

void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &)
void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &) (void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &))

what is ?1?? and ::d::DV?& in the unmangled names?

Do you have any directions in solving these kind of problems?

Arjan

Arjan wrote:
> Walter,
> 
> One of the boost.test problems is with linking a lib. The creation of the lib triggers this warning:
> Warning: Public '?char_type@?1??print_escaped@unit_test@boost@@YAXAAV?$basic_ostream@std@DV?$char_traits@std@D@1@@std@@V?$basic_ 
> 
> cstring@unit_test@boost@_OD@23@@Z23@4V?$fixed_mapping@unit_test@boost@DPBDU?$less@std@D@std@@@23@A' already in library, redefinition ignored.
> 
> and the link error using the lib this:
> Error 1: Previous Definition Different : ?char_type@?1??print_escaped@unit_test@boost@@YAXAAV?$basic_ostream@std@DV?$char_traits@std@D@1@@std@ (void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??prin 
> 
> t_escaped &))
> 
> unmangle.exe produces the following for the two mentioned above:
> 
> void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &)
> void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &) (void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &))
> 
> what is ?1?? and ::d::DV?& in the unmangled names?
> 
> Do you have any directions in solving these kind of problems?
> 
> Arjan

What it means is the same symbol is defined in two different object files, or twice in the same object module.

?1 means a destructor

Walter Bright wrote:
> Arjan wrote:
>> Walter,
>>
>> One of the boost.test problems is with linking a lib. The creation of the lib triggers this warning:
>> Warning: Public '?char_type@?1??print_escaped@unit_test@boost@@YAXAAV?$basic_ostream@std@DV?$char_traits@std@D@1@@std@@V?$basic_ 
>>
>> cstring@unit_test@boost@_OD@23@@Z23@4V?$fixed_mapping@unit_test@boost@DPBDU?$less@std@D@std@@@23@A' already in library, redefinition ignored.
>>
>> and the link error using the lib this:
>> Error 1: Previous Definition Different : ?char_type@?1??print_escaped@unit_test@boost@@YAXAAV?$basic_ostream@std@DV?$char_traits@std@D@1@@std@ (void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??prin 
>>
>> t_escaped &))
>>
>> unmangle.exe produces the following for the two mentioned above:
>>
>> void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &)
>> void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &) (void cdecl boost::unit_test::?1??print_escaped::char_type(basic_ostream<>::d::DV?$char_traits::std::D::?1??print_escaped &))
>>
>> what is ?1?? and ::d::DV?& in the unmangled names?
>>
>> Do you have any directions in solving these kind of problems?
>>
>> Arjan
> 
> What it means is the same symbol is defined in two different object files, or twice in the same object module.

Yes I know. But how do I get back to the original definition. The (un)mangled ones above do not seem to exist in this form in the source code. They probably are generated by the compiler and somehow the same definition is produced twice.

> 
> ?1 means a destructor

Are both destructors? How should one read such (un(mangled)lines?

boost -> namespace
unit_test -> namespace
?1 -> destructor
?? -> ..
print_escaped::char_type -> ??

Arjan

Arjan wrote:
> Walter Bright wrote:
>> What it means is the same symbol is defined in two different object files, or twice in the same object module.
> Yes I know. But how do I get back to the original definition. The (un)mangled ones above do not seem to exist in this form in the source code. They probably are generated by the compiler and somehow the same definition is produced twice.

When things look that complicated, I never even bother trying to figure it out. I just start whacking the source code down to simplify it.

>>
>> ?1 means a destructor
> 
> Are both destructors? How should one read such (un(mangled)lines?
> 
> boost -> namespace
> unit_test -> namespace
> ?1 -> destructor
> ?? -> ..
> print_escaped::char_type -> ??

?$ means the start of a template name followed by the template arguments.

?? means an operator overload.
?!? means a scoped name

Walter Bright wrote:
> Arjan wrote:
>> Walter Bright wrote:
>>> What it means is the same symbol is defined in two different object files, or twice in the same object module.
>> Yes I know. But how do I get back to the original definition. The (un)mangled ones above do not seem to exist in this form in the source code. They probably are generated by the compiler and somehow the same definition is produced twice.
> 
> When things look that complicated, I never even bother trying to figure it out. I just start whacking the source code down to simplify it.
> 
>>>
>>> ?1 means a destructor
>>
>> Are both destructors? How should one read such (un(mangled)lines?
>>
>> boost -> namespace
>> unit_test -> namespace
>> ?1 -> destructor
>> ?? -> ..
>> print_escaped::char_type -> ??
> 
> ?$ means the start of a template name followed by the template arguments.
> 
> ?? means an operator overload.
> ?!? means a scoped name

Well this helps, maybe this should be in the unmangle.exe manual somewhere.

I already had a strong feeling a templated stream operator overload is causing this. Will investigate it a little further....

Thanks,
Arjan