[llvm-dev] Error while iterating over callee nodes in CallGraph

[Doerfert, Johannes via llvm-dev]

On 12/15, Niddodi, Chaitra via llvm-dev wrote:
>   for (CallGraphNode::iterator ti = cgm->begin(); ti != cgm->end(); ++ti)
>      {
>       CallGraphNode * cgn = ti->second;
>       if(cgn==NULL)
>         continue;
>       errs()<<cgn->getFunction()<<"\n";
>       errs()<<cgn->getFunction()->getName()<<"\n";

I think the function (cgn->getFunction()) can be NULL (to indicate
special edges). Make sure it isn't.
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