[Bug c++/15407] New: Problem using shared library created from template class

["uttamkumar at hotmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

I have a template class declare in T.hpp and defined in T.cpp and want to build 
a shared library and use that library to write an application. Only application 
knows about the template(object) type.

g++ -g -D_REENTRANT -frepo -O -W -Wall -Wno-unknown-pragmas -I. -I../h  -fPIC -
c  T.cpp
It has created the T.rpo repository file.
g++ -frepo -shared -o ../lib/libT.so -fPIC T.o

Now build the app Th.
g++ -g -D_REENTRANT -frepo -O -W -Wall -Wno-unknown-pragmas -I. -I../h  -fPIC -
c  Th.cpp
It has created the Th.rpo file too.
Now linking: and get the following errro.
g++   Th.o -o Th -L../lib -lT -lpthread -lnsl -lsocket -lstdc++  -l c -l gcc_s
Undefined                       first referenced
 symbol                             in file
ThreadQueue<Msg>::GetMsg(long)      Th.o
ThreadQueue<Msg>::CreateThread(void* (*)(void*), void*)Th.o
ThreadQueue<Msg>::PutMsg(Msg*)      Th.o
ThreadQueue<Msg>::ThreadQueue[in-charge](int)Th.o
ld: fatal: Symbol referencing errors. No output written to Th
collect2: ld returned 1 exit status
--------------------------------------------------

If I use collect2 for linking I get the follwoing error.
collect2   Th.o -o Th -L../lib -l T -lpthread -lnsl -lsocket -lstdc++  -lc -
lgcc_s
collect: recompiling Th.cpp
collect: recompiling T.cpp
ThreadQueue.cpp: In member function `T* ThreadQueue<T>::GetMsg(long int)':
ThreadQueue.cpp:53: warning: `std::vector<T*, std::allocator<T*> >::iterator' 
   is implicitly a typename
ThreadQueue.cpp:53: warning: implicit typename is deprecated, please see the 
   documentation for details
collect: recompiling Th.cpp
collect: recompiling ThreadQueue.cpp

and it goes to infinite recompiling loop.

-- 
           Summary: Problem using shared library created from template class
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: uttamkumar at hotmail dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15407