If we discover a vacuum solution with a singularity at r=2M and the g_{tt} doesn't vanish at this point. Whether this solution can be a black hole or wormhole solution?

In the Schwarzschild solution, r=2M is a singular point and the g_{tt} also vanishes and its clearly a Black hole solution. What happen for the former case? Since g_{tt} is finite for the first case the red-shift at r=2M is also a finite.

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