From: jere AT sci DOT fi (Jere Käpyaho)
Newsgroups: comp.os.msdos.djgpp
Subject: DJGPP and STL priority_queue
Date: Wed, 20 Nov 1996 12:33:57 GMT
Organization: Scifi Communications International, http://www.sci.fi/, helpdesk AT sci DOT fi, (931)3186277
Lines: 43
Message-ID: <56utqa$975@tron.sci.fi>
NNTP-Posting-Host: c.dyn.sci.fi
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I can't get the Standard Template Library priority_queue class to work
with DJGPP V2. Some other STL classes work fine, but when I try to
compile a program that uses a priority queue, I get weird errors.
Take this, for example:

// pqtest.cc
#include <stack>
#include <vector>

int main()
{
    priority_queue< vector<int>, less<int> > pq;
    return 0;
}

When I compile this with DJGPP V2 using the command

gcc -Wall -o pqtest.exe pqtest.cc -lstdcxx

I get the following error messages:

c:/djgpp/lang/cxx/heap.h: In function `void __push_heap_aux(
    int *, int *, struct less<int>, int *)':
c:/djgpp/lang/cxx/heap.h:57: type unification failed for function
    template `template <class RandomAccessIterator, class Distance,
    class T> void __push_heap(RandomAccessIterator, Distance,
    Distance, T)'

What is wrong, and how do I get a simple priority queue going?
Any help is appreciated.

Another thing: with the GNU Standard C++ Library that comes
with DJGPP we should do "#include <queue>" when using 
queues. That is, or should be, a forwarding include file which
in turn includes 'queue.h'. However, there is no queue.h!
I have expanded all the ZIP files for GPP and LGP but it 
doesn't exist. Is this an oversight by the library designers?

Regards,
Jere