Is "if (!pointer)" as portable as "if (pointer == NULL)" ???

[Larry Jones]

In article <656 at hades.OZ>, greyham at hades.OZ (Greyham Stoney) writes:
> Is this correct?. Can I just do:
> 	if (buffer) free(buffer)
> And stuff like that?.

Yes.  A null pointer is guaranteed to compare equal to zero, so
if (ptr) and if (!ptr) are completely portable.  Many will debate
whether they are stylistically good or bad, but they definitely
are portable.
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