OxCaml: test recursive value with unboxed contents

The primitive caml_alloc_mixed_dummy is used in this case.

Author: vouillon

compiler/tests-oxcaml/misc/.ocamlformat

@@ -0,0 +1 @@
+disable

compiler/tests-oxcaml/misc/dune

@@ -0,0 +1,10 @@
+(env
+ (_
+  (flags
+   (:standard
+    (-w -32-69)))))
+
+(tests
+ (names test)
+ (build_if %{oxcaml_supported})
+ (modes byte js wasm))

compiler/tests-oxcaml/misc/test.ml

@@ -0,0 +1,4 @@
+
+type t = { x : t; y : float32# }
+
+let rec x = { x; y = #0.s }

toplevel/examples/lwt_toplevel/dune

@@ -158,7 +158,7 @@
      "%+(jsoo_runtime)"
      -r
      js_of_ocaml-ppx.as-lib)
-    (run tr -d "\r")
+    (run tr -d \r)
     (with-accepted-exit-codes
      (or 0 1)
      (run grep -v ^$))))))