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Subject: Re: [OMPI devel] 32 bit udapl warnings
From: Gleb Natapov (glebn_at_[hidden])
Date: 2008-01-31 08:58:33


On Thu, Jan 31, 2008 at 08:45:54AM -0500, Don Kerr wrote:
> This was brought to my attention once before but I don't see this
> message so I just plain forgot about it. :-(
> uDAPL defines its pointers as uint64, "typedef DAT_UINT64 DAT_VADDR",
> and pval is a "void *" which is why the message comes up. If I remove
> the cast I believe I get a different warning and I just haven't stopped
> to think of a way around this.
dat_pointer = (DAT_VADDR)(uintptr_t)void_pointer;

This is not just a warning. This is a real bug. If MSB of a void pointer
will be 1 it will be sign extended.

>
> Tim Prins wrote:
> > Hi,
> >
> > I am seeing some warnings on the trunk when compiling udapl in 32 bit
> > mode with OFED 1.2.5.1:
> >
> > btl_udapl.c: In function 'udapl_reg_mr':
> > btl_udapl.c:95: warning: cast from pointer to integer of different size
> > btl_udapl.c: In function 'mca_btl_udapl_alloc':
> > btl_udapl.c:852: warning: cast from pointer to integer of different size
> > btl_udapl.c: In function 'mca_btl_udapl_prepare_src':
> > btl_udapl.c:959: warning: cast from pointer to integer of different size
> > btl_udapl.c:1008: warning: cast from pointer to integer of different size
> > btl_udapl_component.c: In function 'mca_btl_udapl_component_progress':
> > btl_udapl_component.c:871: warning: cast from pointer to integer of
> > different size
> > btl_udapl_endpoint.c: In function 'mca_btl_udapl_endpoint_write_eager':
> > btl_udapl_endpoint.c:130: warning: cast from pointer to integer of
> > different size
> > btl_udapl_endpoint.c: In function 'mca_btl_udapl_endpoint_finish_max':
> > btl_udapl_endpoint.c:775: warning: cast from pointer to integer of
> > different size
> > btl_udapl_endpoint.c: In function 'mca_btl_udapl_endpoint_post_recv':
> > btl_udapl_endpoint.c:864: warning: cast from pointer to integer of
> > different size
> > btl_udapl_endpoint.c: In function
> > 'mca_btl_udapl_endpoint_initialize_control_message':
> > btl_udapl_endpoint.c:1012: warning: cast from pointer to integer of
> > different size
> >
> >
> > Thanks,
> >
> > Tim
> > _______________________________________________
> > devel mailing list
> > devel_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/devel
> >
> _______________________________________________
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> devel_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/devel

--
			Gleb.