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Diffstat (limited to 'test-suite/bugs/closed/4679.v')
| -rw-r--r-- | test-suite/bugs/closed/4679.v | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4679.v b/test-suite/bugs/closed/4679.v new file mode 100644 index 00000000..c94fa31a --- /dev/null +++ b/test-suite/bugs/closed/4679.v @@ -0,0 +1,18 @@ +Require Import Coq.Setoids.Setoid. +Goal forall (T : nat -> Set -> Set) (U : Set) + (H : forall n : nat, T n (match n with + | 0 => fun x => x + | S _ => fun x => x + end (nat = nat)) = U), + T 0 (nat = nat) = U. +Proof. + intros. + let H := match goal with H : forall _, eq _ _ |- _ => H end in + rewrite H || fail 0 "too early". + Undo. + let H := match goal with H : forall _, eq _ _ |- _ => H end in + setoid_rewrite (H 0) || fail 0 "too early". + Undo. + setoid_rewrite H. (* Error: Tactic failure: setoid rewrite failed: Nothing to rewrite. *) + reflexivity. +Qed.
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