At the office we have this joke, that the shortest program, that produces “Segmentation fault” is:
$ echo Segmentation fault (core dumped)
Segmentation fault (core dumped)
We had this joke, after a collegue of ours debugged that exact program for 20min, before he realized that it actually printed sefgault 
However, one of the collegues decided to challenge that and he wrote this piece of code:
$ echo 'int main() { int *i=0; *i=0; }' | g++ -x c++ - ; ./a.out
Segmentation fault (core dumped)
At that point I jumped in, and “optimized it” :
$ echo 'int main(){int *i;*i=0;}'|g++ -x c++ -;./a.out
We had another “optimization”:
$ echo 'main(){int*i;*i=0;}'|g++ -x c++ -;./a.out
Then the first collegue decided that it would be easier in shell:
sh -c 'kill -11 $$'
I manged to make another optimization :
$ sh $(kill -11 $$)
In the end, one college from our Plovdiv office decided to share with us, this link
