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On Sat, Jul 21, 2012 at 12:48 PM, Florian <flo.44 at gmx.de> wrote: > >On Sat, Jul 21, 2012 at 12:26 PM, Florian <flo.44 at gmx.de> wrote: > > > >> I made it to step with gdb now in VecCreate(). The problem is inside the > >> VecCreate > >> function the new created vector vec has all the adresses set. But when > I'm > >> stepping > >> back in my function the addresses are all 0x0. > >> > > > >Let VecCreate finish. > > What do you mean? I step to the last line in VecCreate and after the last > line back. > The last line is *vec = v; which makes your pointer point at the new vector. > > > > > > >> > >> Another question is, what happens with my created vector. I mean I > create > >> a Object > >> with Vec v and inside the VecCreate function the addres of my object v > is > >> first set > >> to PETSC_NULL and later to the Vec which is created inside the VecCreate > >> function. > >> It seems like I never could destroy my created vector. Can somebody > >> explain this to me? > >> > > > >The new object is created, then your pointer is made to point at the new > >object. > > So if I get it right I create with "Vec v;" only a pointer? But why is it > possible before I call VecCreate > to have a look at a vector object. I mean in ddd I can display a full > vector object. > > In petscvec.h, you will find typedef struct _p_Vec *Vec; Of course DDD allows you to follow an invalid pointer. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120721/a1797c17/attachment.html>
