Re: dereferencing pointer to incomplete type

[Micha Feigin <michf@post.tau.ac.il>]

On Wed, Jun 16, 2004 at 07:02:04PM -0400, Anshuman S. Rawat wrote:
> > > Arping.xs:153: dereferencing pointer to incomplete type
> > >  make: *** [Arping.o] Error 1
> > >
> > >  Now line 153 in the source is - 
> > >  
> > >  memcpy(enet_src, src_mac->ether_addr_octet,6);
> > >  where
> > >  u_char enet_src[6] = {0x00, 0x00, 0x00, 0x00, 0x00,0x00};
> > >  struct ether_addr *src_mac;
> > >  struct ether_addr
> > >  {
> > >      u_char  ether_addr_octet[6];
> > >  };
> > 
> > Try as a test to add the struct definition just before the call to
> > memcpy and see if that resolves the error. Could be that for some
> > reason things aren't included properly.
> 
> I already tried this. It didn't help.
> 

In this case its probably something else.

Are you sure that u_char is properly defined? what happens if you add
before the these definitions?

typedef unsigned char * u_char;

or write:

memcpy((void *)enet_src, (void *)(src_mac->ether_addr_octet), 6);

or just to make sure we are looking at the right thing to do

memcpy(enet_src, enet_src, 6);

BTW, what is the .xs file sufix?

> -Anshuman 
> 
> 
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