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Xi Ge
1f4b2065f2
Two classes whose generic superclasses name each other, like `class A: Base<B>` and `class B: Base<A>`, crashed any client that imported them: checking one class's dependencies led back to the other, recursing until the stack ran out. Now the module deserializer detects the cycle: a class that is re-entered while its dependencies are still being checked skips the checks and creates the decl right away.