lean4-htt/tests/lean/instance_cache_bug1.lean
Leonardo de Moura 90bfd84a07 feat(frontends/lean): Type is now (Type 1)
In the standard library, we should use explicit universe variables for
universe polymorphic definitions.

Users that want to declare universe polymorphic definitions but do not
want to provide universe level parameters should use
  Type _
or
  Type*
2016-09-17 14:30:54 -07:00

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constant A : Type
constant a : A
constant A_has_add : has_add A
check a + a -- ERROR
attribute [instance] A_has_add
check a + a