Slava Pestov 65ad5ea1cb GSB: Assert that a minimal signature doesn't have protocols refined by other protocols ...

I'm looking at a bug where we end with a signature like

    protocol B { ... }
    protocol BB : B { }

    <Self where Self : B, Self : BB>

While this one be a one-off bug, it's easy enough to check for this
condition with an assert here.

2021-09-07 13:31:17 -04:00

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