[petsc-users] check if object was created

[Jed Brown]

On Sun, Oct 2, 2011 at 04:46, Dominik Szczerba <dominik at itis.ethz.ch> wrote:

> if(object)
>   KSP/Mat/Vec/etcDestroy(object)
>

Just call KSPDestroy(&ksp);

It doesn't matter if KSP is NULL or a valid object because this function
checks. But note that if you just write

KSP ksp;

or allocate similarly in part of malloc() --- with no memzero() or similar
--- then the value of ksp is undefined.
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