Re: [Valgrind-users] No "Use of uninitialised value" warning

[Nicholas N. <n.n...@gm...>]

On Wed, May 13, 2009 at 2:43 AM, Colin Miller <col...@pi...> wrote:
> André Wöbbeking wrote:
>
> Valgrind only reports when an unused variable is used for flow-control
> (or, hopefuly I/O).
>
> Swapping doesn't trigger the alert. This is because, in C, structures
> can legitimately have
> uninitialised areas due to nested unions or padding.

There's more on this in the manual.  And this blog post discusses it
in even more detail:

http://blog.mozilla.com/nnethercote/2009/02/27/eliminating-undefined-values-with-valgrind-the-easy-way/

Nick