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Attempted fix for crash with runtime generics #2309

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Attempted fix for crash with runtime generics #2309

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5 changes: 5 additions & 0 deletions mypy/checkexpr.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1374,6 +1374,11 @@ def visit_reveal_type_expr(self, expr: RevealTypeExpr) -> Type:
def visit_type_application(self, tapp: TypeApplication) -> Type:
"""Type check a type application (expr[type, ...])."""
tp = cast(CallableType, self.accept(tapp.expr))
if isinstance(tp, AnyType):
return AnyType()
if not hasattr(tp, 'variables'):
self.chk.fail('Type application targets invalid expression', tapp)
return AnyType()
return self.apply_generic_arguments(tp, tapp.types, tapp)

def visit_type_alias_expr(self, alias: TypeAliasExpr) -> Type:
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