[cfe-commits] PATCH: Fix dereference of end iterator

[Chandler Carruth]

LGTM, please commit.

On Wed, Mar 14, 2012 at 11:39 AM, Matt Beaumont-Gay <matthewbg at google.com>wrote:

> Spotted by ASan via test/Analysis/func.c.
>
> --- a/lib/Analysis/CallGraph.cpp        2012-03-13 16:21:39.000000000 -0700
> +++ b/lib/Analysis/CallGraph.cpp        2012-03-14 11:26:25.000000000 -0700
> @@ -133,7 +133,9 @@
>  }
>
>  CallGraphNode *CallGraph::getNode(const Decl *F) const {
> -  return FunctionMap.find(F)->second;
> +  FunctionMapTy::const_iterator I = FunctionMap.find(F);
> +  if (I == FunctionMap.end()) return 0;
> +  return I->second;
>  }
>
>  CallGraphNode *CallGraph::getOrInsertFunction(Decl *F) {
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