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NULL v. zeroNULL v. zeroPosted Jul 15, 2004 22:02 UTC (Thu) by sir99 (guest, #3286)In reply to: NULL v. zero by Ross Parent article: NULL v. zero If NULL is defined as (void*)0, then neither of those is legal C++. It seems that gcc special-cases NULL so that it can be treated as both an integer and a pointer. Further, only an expression that evaluates to 0 at compile-time can be implicitly cast to a pointer; no other integer can be. AIUI, the lhs doesn't determine how the rhs is evaluated. The rhs is evaluated independently and then promoted to the type of the lhs.
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NULL v. zero Posted Jul 16, 2004 19:35 UTC (Fri) by Ross (subscriber, #4065) [Link] "AIUI, the lhs doesn't determine how the rhs is evaluated. The rhs is evaluated independently and then promoted to the type of the lhs."That was my point, really. That's why NULL as (void *)0 is better than just
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