On 5 August 2010 13:40, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote: > What is the intended behavior of PetscDLSym when called on an empty handle: > PetscDLSym(handle=PETSC_NULL, symbol, &value) > My understanding was that this should look for symbol in the symbol table of > the main executable. > This is based on what happens in the Windows case (#ifdef > PETSC_HAVE_WINDOWS_H), > but when using dlopen (#ifdef PETSC_HAVE_DLFCN_H), this probably won't > behave correctly,as currently implemented. > This is because the above call will boil down to > ?? value = dlsym((dlhandle_t)0, symbol), > which on many systems returns NULL (e.g., on Ubuntu 9.10).
Look at your dlfch.h header file.. Does it have the line below?: # define RTLD_DEFAULT ((void *) 0) -- Lisandro Dalcin --------------- CIMEC (INTEC/CONICET-UNL) Predio CONICET-Santa Fe Colectora RN 168 Km 472, Paraje El Pozo Tel: +54-342-4511594 (ext 1011) Tel/Fax: +54-342-4511169
