Merge PR #7866: Implementation of mutual records in the higher strata

2 files changed, 97 insertions, 0 deletions

diff --git a/test-suite/success/mutual_record.v b/test-suite/success/mutual_record.v
new file mode 100644
index 000000000..77529733b
--- /dev/null
+++ b/test-suite/success/mutual_record.v
@@ -0,0 +1,57 @@
+Module M0.
+
+Inductive foo (A : Type) := Foo {
+  foo0 : option (bar A);
+  foo1 : nat;
+  foo2 := foo1 = 0;
+  foo3 : foo2;
+}
+
+with bar (A : Type) := Bar {
+  bar0 : A;
+  bar1 := 0;
+  bar2 : bar1 = 0;
+  bar3 : nat -> foo A;
+}.
+
+End M0.
+
+Module M1.
+
+Set Primitive Projections.
+
+Inductive foo (A : Type) := Foo {
+  foo0 : option (bar A);
+  foo1 : nat;
+  foo2 := foo1 = 0;
+  foo3 : foo2;
+}
+
+with bar (A : Type) := Bar {
+  bar0 : A;
+  bar1 := 0;
+  bar2 : bar1 = 0;
+  bar3 : nat -> foo A;
+}.
+
+End M1.
+
+Module M2.
+
+Set Primitive Projections.
+
+CoInductive foo (A : Type) := Foo {
+  foo0 : option (bar A);
+  foo1 : nat;
+  foo2 := foo1 = 0;
+  foo3 : foo2;
+}
+
+with bar (A : Type) := Bar {
+  bar0 : A;
+  bar1 := 0;
+  bar2 : bar1 = 0;
+  bar3 : nat -> foo A;
+}.
+
+End M2.
diff --git a/test-suite/success/vm_records.v b/test-suite/success/vm_records.v
new file mode 100644
index 000000000..8a1544c8e
--- /dev/null
+++ b/test-suite/success/vm_records.v
@@ -0,0 +1,40 @@
+Set Primitive Projections.
+
+Module M.
+
+CoInductive foo := Foo {
+  foo0 : foo;
+  foo1 : bar;
+}
+with bar := Bar {
+  bar0 : foo;
+  bar1 : bar;
+}.
+
+CoFixpoint f : foo := Foo f g
+with g : bar := Bar f g.
+
+Check (@eq_refl _ g.(bar0) <: f.(foo0).(foo0) = g.(bar0)).
+Check (@eq_refl _ g <: g.(bar1).(bar0).(foo1) = g).
+
+End M.
+
+Module N.
+
+Inductive foo := Foo {
+  foo0 : option foo;
+  foo1 : list bar;
+}
+with bar := Bar {
+  bar0 : option bar;
+  bar1 : list foo;
+}.
+
+Definition f_0 := Foo None nil.
+Definition g_0 := Bar None nil.
+
+Definition f := Foo (Some f_0) (cons g_0 nil).
+
+Check (@eq_refl _ f.(foo1) <: f.(foo1) = cons g_0 nil).
+
+End N.