OpenEuphoria

... Buffer overruns are huge. This past year, there has been three patches that I know of by the debian group to stop a buffer overrun that causes the caller to be able to execute programs on the host computer. They are all very tricky. I'm not a hacker, so I do not understand it that well, but people have been able to execute a program on your computer through exploits in PCRE. For instance:

sequence name = prompt_string("Enter your name: ") 
r:regex validNameRx = r:new("[A-Z][a-z]+") 
if r:match(validNameRx, name) then 
    puts(1, "You have a valid name!\n") 
end if 

That program above, people have been able to execute commands on your computer though. ...