Dereferencing Pointer To Incomplete Type

1. Dereferencing Pointer To Incomplete Type ‘rsa Aka Struct Rsa_st
2. Dereferencing Pointer To Incomplete Type C

Code: int preparepkts(char.file, pcappkts.pkts) pcapt.pcap;struct pcappkthdr.pkthdr = NULL.struct iphdr.iphdr.iphdr = (struct iphdr.)((char.)ethhdr + sizeof(.ethhdr)); version 6) //ipv6pktlen = (ulong) pkthdr-len - sizeof(.ethhdr) - sizeof(.ip6hdr);let's see here.This:.ethdr is totally illegal. You cannot use a pointer syntax on a plain old struct.I think you'd want this:sizeof( struct ethdr )in order to get any useful information.substitute 'struct whatever' wherever you have these sizeof(.thing) things.-BTW - what in the world are you trying to do here?Whatever it is.

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It's the wrong way.If you describe what it really is you're trying to accomplish,I can show you a better way.Best regards,We're all learning,quirk. 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:preparepcap.c:126: error: invalid application of `sizeof' to an incomplete typeSource Line 126:iphdr = (struct iphdr.)((char.)ethhdr + sizeof(struct ethhdr));Please let me know if you have other suggestions.thank you. Code: iphdr = (struct iphdr.)((char.)ethhdr + sizeof(struct ethhdr));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 memoryis a pointer to iphdr. This simply is dreaming. Although it could happen,given that the compiler writer places his variables on after the other inmemory but if it did. That means that the memory must've been explicitlydeclared somewhere and if so. Why not explicitly cast that memory here?But whatever. The same problem exists, more or less.

Dereferencing Pointer To Incomplete Type ‘rsa Aka Struct Rsa_st

I have these lines of code: int main(int argc, char.argv) int listenfd, connfd; int noofclients,waittime,client; socklent clilen; struct sockaddrin servaddr,.

But to get it to compile,try this.

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Does the idea of staying away from typedefs ( at least at this point) look reasonable to you?It doesn't look reasonable to me.typedefs are great.struct nodestruct.left; from Matir's example is OK, butlooptree left; from the original example is nicer.The trick is how to get that predeclare correct so looptree can be defined before the struct but as a pointer to it.In an example this simple, Matir's approach looks better, because it avoids the need for any pre declaration. But in the real world of serious projects with pointers to structures, the circularities are not so easily suppressed.

Dereferencing Pointer To Incomplete Type C

The forward declarations will be required and using typedefs (rather than things like struct nodestruct. ) leads to more readable maintainable code.