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

[Karl Heuer]

In article <717 at ssp11.idca.tds.philips.nl> dolf at idca.tds.PHILIPS.nl (Dolf Grunbauer) writes:
>How about [skipping the test for NULL and writing just]
>	free(buffer)
>The manual pages I know allow a NULL pointer and doing nothing in this case.
>Is this generally true ?

It's a new feature of the ANSI C library.  It should be avoided if you need
to retain portability to old implementations.

Karl W. Z. Heuer (karl at ima.ima.isc.com or harvard!ima!karl), The Walking Lint