diff options
Diffstat (limited to 'test-suite/bugs/closed/4161.v')
-rw-r--r-- | test-suite/bugs/closed/4161.v | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4161.v b/test-suite/bugs/closed/4161.v new file mode 100644 index 00000000..aa2b189b --- /dev/null +++ b/test-suite/bugs/closed/4161.v @@ -0,0 +1,27 @@ + + (* Inductive t : Type -> Type := *) + (* | Just : forall (A : Type), t A -> t A. *) + + (* Fixpoint test {A : Type} (x : t A) : t (A + unit) := *) + (* match x in t A return t (A + unit) with *) + (* | Just T x => @test T x *) + (* end. *) + + + Definition Type1 := Type. +Definition Type2 := Type. +Definition cast (x:Type2) := x:Type1. +Axiom f: Type2 -> Prop. +Definition A := + let T := fun A:Type1 => _ in + fun A':Type2 => + eq_refl : T A' = f A' :> Prop. +(* Type2 <= Type1... f A -> Type1 <= Type2 *) + +Inductive t : Type -> Type := + | Just : forall (A : Type), t A -> t A. + +Fixpoint test {A : Type} (x : t A) : t (A + unit) := + match x in t A with + | Just B x => @test B x + end.
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