http://forum.intern0t.net/exploits-vulnerabilities-pocs/1302-freebsd-6-1-local-root-vulnerability-0-day.html
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1.c: In function `main':
1.c:73: warning: assignment from incompatible pointer type
1.c:83: warning: passing arg 3 of `pthread_create' from incompatible pointer type
1.c:84: warning: passing arg 3 of `pthread_create' from incompatible pointer type
1.c:107:2: warning: no newline at end of file
/var/tmp//ccvijMZ6.o(.text+0x1ee): In function `main':
: undefined reference to `pthread_create'
/var/tmp//ccvijMZ6.o(.text+0x203): In function `main':
: undefined reference to `pthread_create'
###########################
http://www.exploit-db.com/exploits/9488/
############################
/var/tmp//ccOFVRly.o(.text+0x1dd): In function `main':
: undefined reference to `pthread_create'
/var/tmp//ccOFVRly.o(.text+0x1f2): In function `main':
: undefined reference to `pthread_create'
############################
По одному из линков вообще ДоС..
з.ы. Не ругаться, я в Си подобных языках вообще ноль.