1 files changed, 19 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4203.v b/test-suite/bugs/closed/4203.v
new file mode 100644
index 00000000..076a3c3d
--- /dev/null
+++ b/test-suite/bugs/closed/4203.v
@@ -0,0 +1,19 @@
+Set Primitive Projections.
+
+Record ops {T:Type} := { is_ok : T -> Prop; constant : T }.
+Arguments ops : clear implicits.
+
+Record ops_ok {T} (Ops:ops T) := { constant_ok : is_ok Ops (constant Ops) }.
+
+Definition nat_ops : ops nat := {| is_ok := fun n => n = 1; constant := 1 |}.
+Definition nat_ops_ok : ops_ok nat_ops.
+Proof.
+  split. cbn. apply eq_refl.
+Qed.
+
+Definition t := Eval lazy in constant_ok nat_ops nat_ops_ok.
+Definition t' := Eval vm_compute in constant_ok nat_ops nat_ops_ok.
+Definition t'' := Eval native_compute in constant_ok nat_ops nat_ops_ok.
+
+Check (eq_refl t : t = t').
+Check (eq_refl t : t = t'').
+\ No newline at end of file