Re: STL linker error (map)

From:

"Duane Hebert" <spoo@flarn.com>

Newsgroups:

microsoft.public.vc.language

Date:

Thu, 31 Aug 2006 12:28:28 -0400

Message-ID:

<#$pI$pRzGHA.3568@TK2MSFTNGP03.phx.gbl>

"Ole Nielsby" <ole.nielsby@snailmail.dk> wrote in message
news:uJ9YvlRzGHA.4044@TK2MSFTNGP04.phx.gbl...

When I try to instantiate a STL map

namespace NS{ ...
SomeReturnType *SomeClass::SomeMethod(...)
{
std::map<Constant*, Any*> map;
...
}
...
}

the linker goes:

error LNK2019: unresolved external symbol __imp___invalid_parameter_noinfo
referenced in function "public: bool __thiscall std::_Tree<class
std::_Tmap_traits<class NS::Constant *,class NS::Any *,struct
std::less<class NS::Constant *>,class std::allocator<struct

std::pair<class

NS::Constant * const,class NS::Any *> >,0>
>::const_iterator::operator==(class std::_Tree<class

std::_Tmap_traits<class

NS::Constant *,class NS::Any *,struct std::less<class NS::Constant

*>,class

std::allocator<struct std::pair<class NS::Constant * const,class NS::Any

>,0> >::const_iterator const &)const "

Can anybody tell me what I missed? Am I supposed to define
a comparator for the pointer type, or doesn't the template
accept pointer types? Any hints on how these linker messages
should be read?

Sounds like it's looking for NS::Constant operator < or a predicate:

From the dinkumware help:

template<class Key, class Ty, class Pr = less<Key>,
class Alloc = allocator<pair<const Key, Ty> > >
class map {