Thanks. I've also read the chapter about dup's from the Stevens book and realized, that you always have to check the fd number you're going to close() after a dup2()
But how can the argc be less than 1? When is it the case? After an exec()? 2005/8/22, Todd C. Miller <[EMAIL PROTECTED]>: > Nope. There is no guarantee that fds 0-2 are open when a program > starts. In that case, fd will fall in the range 0-2 and without > the check we can close one of the descriptors 0-2. > > Bonus trivia: There's also no guarantee that argc > 0 when a program > starts. Lots of programs make bad assumptions...
