[PATCH] Sema: Fix spurious 'infinite recursion' warning for overloaded functions

[Vedant Kumar]

Sema::checkRecursiveFunction() currently cannot tell overloaded functions apart.

This results in spurious warnings -- clang claims that a function is infinitely recursive when it in fact just calls a different function. The attached patch fixes the problem by keeping the original FunctionDecl around, instead of switching to the 'canonical' decl.

I don't have commit rights, so I'd appreciate someone taking a look at the patch and guiding it into trunk :).

vedant

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