On Fri, Jan 16, 2009 at 10:33:15AM -0800, Nate Eldredge wrote:
> Pop quiz: which of the following statements is correct?
>
> #include <stdlib.h>
> #include <unistd.h>
>
> execl("/bin/sh", "/bin/sh", 0);
> execl("/bin/sh", "/bin/sh", NULL);
None, as NULL is allowed to expand to 0. You have to write
execl("/bin/sh", "/bin/sh", (char *)0);
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