Fixing bug in native compiler with let patterns in fixpoint definitions.

Typical example: Fixpoint f (m : nat) (o := true) (n : nat) {struct n} := n.
Was raising an "index out of bounds" exception at compile-time.
Nota: this construction is still incorrectly handled by the VM.



git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16197 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 14 insertions, 0 deletions

diff --git a/kernel/nativelambda.ml b/kernel/nativelambda.ml
index 2ca274799..f530f6e2e 100644
--- a/kernel/nativelambda.ml
+++ b/kernel/nativelambda.ml
@@ -66,6 +66,20 @@ let decompose_Llam lam =
   | Llam(ids,body) -> ids, body
   | _ -> [||], lam
 
+let rec decompose_Llam_Llet lam =
+  match lam with
+  | Llam(ids,body) ->
+      let vars, body = decompose_Llam_Llet body in
+      Array.fold_right (fun x l -> (x, None) :: l) ids vars, body
+  | Llet(id,def,body) ->
+      let vars, body = decompose_Llam_Llet body in
+      (id,Some def) :: vars, body
+  | _ -> [], lam
+
+let decompose_Llam_Llet lam =
+  let vars, body = decompose_Llam_Llet lam in
+  Array.of_list vars, body
+
 (*s Operators on substitution *)
 let subst_id = subs_id 0
 let lift = subs_lift