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Old 04-28-2002, 08:56 PM   #1
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Registered: Apr 2002
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Question linux networking question

I have been racking my brain for the last couple of days to find an answer to this question, so here it is:

I am building a networking application (using poll()). I first wanted to figure out how poll worked, so I wrote some test code (very short). It segment faults whenever I run it, and I can't figure out why. I have tried it on several other distros, and flavors of *nix, including my universitys DIGITAL system with no luck.

------Here is my code-----------------------

#include <stdio.h>
#include <poll.h>
#include <stdlib.h>

struct ClientData {
char buffer[8192];

int main() {

pollfd ClientFds[1024];
ClientData socketdata[1024];

for (int x=0;x<1024;x++) {
ClientFds[x].fd = -1;
return 0;

any help would be greatly appreciated.

--------end of code-------
Old 04-29-2002, 07:40 AM   #2
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Registered: Dec 2001
Location: The Netherlands
Distribution: Ubuntu
Posts: 1,316

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Use malloc and free when you want to allocate large amounts of memory. You are trying to get a block of 8MB's by creating an array of ClientData.


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