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13.4 Properties of Null Pointers
Most modern hosts reliably fail when you attempt to dereference a null pointer.
On almost all modern hosts, null pointers use an all-bits-zero internal
representation, so you can reliably use memset
with 0 to set all
the pointers in an array to null values.
If p
is a null pointer to an object type, the C expression
p + 0
always evaluates to p
on modern hosts, even though
the standard says that it has undefined behavior.
This document was generated on April 26, 2012 using texi2html 5.0.