[Bug c++/25908] Multiple definitions of symbol vtables

[schnetter at aei dot mpg dot de]

------- Comment #2 from schnetter at aei dot mpg dot de  2006-01-23 19:45 -------
Here is a way to reproduce the error with very little source code, but still
depending on the LAM MPI library.  The actual source code I used consists of
two files, main.cc and sub.cc, which I include here for completeness:

main.cc:
#include <mpi.h>

int
main (int argc, char * argv[])
{
  return 0;
}

sub.cc:
#include <mpi.h>

void
sub ()
{
}



I preprocessed these with "g++ -E", and I attach the results.  When I compile
the preprocessed sources, I get:

$ ~/gcc-new/bin/g++ -o lamtest main.ii sub.ii
/usr/bin/ld: multiple definitions of symbol typeinfo for MPI::Op
/var/tmp//ccFSbBVd.o definition of typeinfo for MPI::Opin section
(__DATA,__const)
/var/tmp//cc8Rm38U.o definition of typeinfo for MPI::Opin section
(__DATA,__const)
/usr/bin/ld: multiple definitions of symbol typeinfo for PMPI::Op
/var/tmp//ccFSbBVd.o definition of typeinfo for PMPI::Opin section
(__DATA,__const)
/var/tmp//cc8Rm38U.o definition of typeinfo for PMPI::Opin section
(__DATA,__const)
/usr/bin/ld: multiple definitions of symbol typeinfo for PMPI::Comm
/var/tmp//ccFSbBVd.o definition of typeinfo for PMPI::Commin section
(__DATA,__const)
/var/tmp//cc8Rm38U.o definition of typeinfo for PMPI::Commin section
(__DATA,__const)

(and many more warnings like that).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25908