Annoying People With Memory Leaks.

[DANIEL2488]

Memory leaks are fairly easy to create. I'll give a few samples.


/* Memory Leak in C */

int main()
{
while (1)
{
malloc(sizeof(char));
}
return 0;
}




/* Memory Leak in C++ - Previous example works as well
but faster */

#include <string>

int main()
{
while (1)
{
new std::string;
}
return 0;
}



/* Memory Leak in D */

import std.gc;

void main()
{
std.gc.disable(); // IMPORTANT
while (1)
{
new Object();
}
}


Something that I've found to be true is that the smaller the thing you allocate, the greater the memory leak in a smaller amount of time. This means it takes less time to allocate space for a small data type like a character than a larger data type like a C++ string, or a D Object.

So what's the big deal, right? It's a memory leak, and Windows (and other OSes) forces the program to terminate or reduce its memory usage if it gets to a dangerous level.

The thing is, if the program doesn't quit, it really slows down the other computer. So here's what you do: you compile this with no terminal window/console, and it runs in the background, slowing down the victim's computer.

Not much of a tutorial, but hey, anyone got something apart from hacking soda vending machines?

[Moonbat]

First programming-related tutorial I've seen in a while. This'll help people when they want an easy way to make someone mad. Nice job :D

I wrote a cookie-stealing tut, but that's basic stuff.

[coz]

Nice job! I remember trying C and writing plenty of memory leaking programs. They were all command prompt programs but man could they slow a computer down. I hated it because it took like 5 mins for the program to fully crash and exit. Most of them leaked because of loops and invalid pointers. Anyway I found an interesting site about a week ago called http://www.firewallleaktester.com/. They have some useful programs.

[DANIEL2488]

Thanks guys.

By the way, I forgot to add, Digital Mars makes the D compiler, and it produces MUCH faster files than GNU's C and C++ compilers. I'd suggest looking into the Digital Mars C++ compilers, because it looks like these guys kick GNU's ass.

[gprunescaper]

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