From: Nicholas N. <nj...@ca...> - 2003-06-10 16:38:18
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On 10 Jun 2003, Jeremy Fitzhardinge wrote: > On Tue, 2003-06-10 at 07:58, Nicholas Nethercote wrote: > > validity is checked when a value is: > > > > 1. used in a condition (affects control flow) > > > > 2. used by a syscall (ie. argument) (affects side effects seen by outside > > world) > > And when it is used as a pointer. Oh yeah, because that can affect the "external behaviour" (by crashing it if the pointer is bogus :) N |