5 files changed, 103 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/bug_12947.v b/test-suite/bugs/closed/bug_12947.v
new file mode 100644
index 0000000000..baf0579465
--- /dev/null
+++ b/test-suite/bugs/closed/bug_12947.v
@@ -0,0 +1,9 @@
+Require Import BinPos Int63 PArray.
+
+Definition foo (n : positive) :=
+  let a := make 2 0 in
+  let b := Pos.iter (fun b => set b 1 1) a 100000 in
+  let v := get b 0 in
+  Pos.iter (fun v => v + get a 0) v n.
+
+Timeout 5 Time Eval vm_compute in foo 1000000.
diff --git a/test-suite/bugs/closed/bug_12970.v b/test-suite/bugs/closed/bug_12970.v
new file mode 100644
index 0000000000..69ce7ec2c2
--- /dev/null
+++ b/test-suite/bugs/closed/bug_12970.v
@@ -0,0 +1,4 @@
+Arguments existT _ & _ _.
+
+Definition f := fun X (A : X -> Type) (P : forall x, A x -> Type) x y =>
+        existT (fun f => forall x, P x (f x)) x y : sigT (fun f => forall x, P x (f x)).
diff --git a/test-suite/bugs/closed/bug_13117.v b/test-suite/bugs/closed/bug_13117.v
new file mode 100644
index 0000000000..5db3f9fadc
--- /dev/null
+++ b/test-suite/bugs/closed/bug_13117.v
@@ -0,0 +1,23 @@
+
+Class A := {}.
+
+Class B (x:A) := {}.
+Class B' (a:=A) (x:a) := {}.
+
+Fail Definition foo a `{B a} := 0.
+Definition foo a `{B' a} := 0.
+
+Record C (x:A) := {}.
+Existing Class C.
+
+Fail Definition bar a `{C a} := 0.
+
+
+Definition X := Type.
+
+Class Y (x:X) := {}.
+
+Definition before `{Y Set} := 0.
+
+Existing Class X.
+Fail Definition after `{Y Set} := 0.
diff --git a/test-suite/bugs/closed/bug_13129.v b/test-suite/bugs/closed/bug_13129.v
new file mode 100644
index 0000000000..632605ecc7
--- /dev/null
+++ b/test-suite/bugs/closed/bug_13129.v
@@ -0,0 +1,58 @@
+From Coq Require Export Morphisms Setoid .
+
+Class Equiv A := equiv: relation A.
+
+Infix "≡" := equiv (at level 70, no associativity).
+Infix "≡@{ A }" := (@equiv A _)
+  (at level 70, only parsing, no associativity).
+
+Notation "(≡)" := equiv (only parsing).
+
+(** Unbundled version *)
+Class Dist A := dist : nat -> relation A.
+
+Notation "x ≡{ n }≡ y" := (dist n x y)
+  (at level 70, n at next level, format "x  ≡{ n }≡  y").
+Notation "x ≡{ n }@{ A }≡ y" := (dist (A:=A) n x y)
+  (at level 70, n at next level, only parsing).
+
+Notation NonExpansive f := (forall n, Proper (dist n ==> dist n ==> dist n) f).
+
+Record OfeMixin A `{Equiv A, Dist A} := {
+  mixin_equiv_dist (x y : A) : x ≡ y <-> forall n, x ≡{n}≡ y;
+}.
+
+(** Bundled version *)
+Structure ofeT := OfeT {
+  ofe_car :> Type;
+  ofe_equiv : Equiv ofe_car;
+  ofe_dist : Dist ofe_car;
+  ofe_mixin : OfeMixin ofe_car
+}.
+Hint Extern 0 (Equiv _) => eapply (@ofe_equiv _) : typeclass_instances.
+Hint Extern 0 (Dist _) => eapply (@ofe_dist _) : typeclass_instances.
+
+(** Lifting properties from the mixin *)
+Section ofe_mixin.
+  Context {A : ofeT}.
+  Implicit Types x y : A.
+  Lemma equiv_dist x y : x ≡ y <-> forall n, x ≡{n}≡ y.
+  Proof. apply (mixin_equiv_dist _ (ofe_mixin A)). Qed.
+End ofe_mixin.
+
+Axiom _0 : Prop. (* dummy which somehow bothers mangle names *)
+Set Mangle Names.
+
+(** General properties *)
+Section ofe.
+  Context {A : ofeT}.
+
+  Lemma ne_proper_2 {B C : ofeT} (f : A -> B -> C) `{Hf:!NonExpansive f} :
+    Proper ((≡) ==> (≡) ==> (≡)) f.
+  Proof.
+    unfold Proper, respectful.
+    setoid_rewrite equiv_dist.
+    intros.
+    apply Hf;auto.
+  Qed.
+End ofe.
diff --git a/test-suite/bugs/closed/bug_13276.v b/test-suite/bugs/closed/bug_13276.v
new file mode 100644
index 0000000000..15ac7e7b36
--- /dev/null
+++ b/test-suite/bugs/closed/bug_13276.v
@@ -0,0 +1,9 @@
+From Coq Require Import Floats.
+Open Scope float_scope.
+
+Lemma foo :
+  let n := opp 0 in sub n 0 = n.
+Proof.
+cbv.
+apply eq_refl.
+Qed.