in reply to Re^7: Why do poisoned null attacks still work ?
in thread Why do poisoned null attacks still work ?
Unlike C, the end of a Perl string is determined by a field outside of the string's payload. This allows Perl strings to contain any characters, including NUL.
As protection against XS authors who treat the string payload as a C string, Perl strings usually have an extra byte allocated, set to NUL. As I understand it, this is a courtesy, not a guarantee.
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Re^9: Why do poisoned null attacks still work ?
by ysth (Canon) on Jul 26, 2009 at 20:18 UTC |