Build Error: error: dereferencing pointer to incomplete type
I'm getting the following Error:
prepare_pcap.c: In function `prepare_pkts':
prepare_pcap.c:127: error: dereferencing pointer to incomplete type
prepare_pcap.c:138: error: dereferencing pointer to incomplete type
Build Error: error: dereferencing pointer to incomplete type
Thank you for your reply. First a background on what I'm trying to do - I'm trying to compile SIPp (VoIP load generator) on Solaris Platform. This is an open Source code - however, a majority of the usage is on Linux platform - where it compiles fine.
I tried your suggestion of replacing sizeof((ethhdr) with sizeof( struct ethhdr ) - however, it fails with the following error:
prepare_pcap.c:126: error: invalid application of `sizeof' to an incomplete type
omg -- this is actual open source code? that's amazing.
Well -- one error at a time. Fix one -- on to the next.
That first suggestion did what it was supposed to do.
This statement:
Is complete insane. It's relying on typecasting a pointer of a structure,
jumping over the size of itself and assuming that the next spot in memory
is a pointer to iphdr. This simply is dreaming. Although it ~could~ happen,
given that the compiler writer places his variables on after the other in
memory but if it did... that means that the memory must've been explicitly
declared somewhere and if so... why not explicitly cast that memory here?
But whatever. The same problem exists, more or less. But to get it to compile,
try this:
I forgot one thing: I had tried w/ ur suggestion:
iphdr = (struct iphdr *)((long)ðhdr + (long)sizeof(struct ethhdr));
and also with
iphdr = (void *)((long)ðhdr + (long)sizeof(struct ethhdr));
However, I got this error again:
prepare_pcap.c:127: error: invalid application of `sizeof' to an incomplete type
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