From d694c532f3f15569a204fa9f2d02f2c0ea83b424 Mon Sep 17 00:00:00 2001
From: Matthieu Sozeau
Date: Fri, 9 Oct 2015 11:02:15 +0200
Subject: Fix Next Obligation to not raise an anomaly in case of mutual
 definitions.

---
 toplevel/obligations.ml | 29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/toplevel/obligations.ml b/toplevel/obligations.ml
index 00ea2ffb84..665926922f 100644
--- a/toplevel/obligations.ml
+++ b/toplevel/obligations.ml
@@ -463,19 +463,6 @@ let map_replace k v m = ProgMap.add k (Ephemeron.create v) (ProgMap.remove k m)
 
 let map_keys m = ProgMap.fold (fun k _ l -> k :: l) m []
 
-let map_cardinal m =
-  let i = ref 0 in
-    ProgMap.iter (fun _ _ -> incr i) m;
-    !i
-
-exception Found of program_info
-
-let map_first m =
-  try
-    ProgMap.iter (fun _ v -> raise (Found v)) m;
-    assert(false)
-  with Found x -> x
-
 let from_prg : program_info ProgMap.t ref =
   Summary.ref ProgMap.empty ~name:"program-tcc-table"
 
@@ -680,6 +667,22 @@ let init_prog_info ?(opaque = false) n b t ctx deps fixkind notations obls impls
       prg_hook = hook;
       prg_opaque = opaque; }
 
+let map_cardinal m =
+  let i = ref 0 in
+  ProgMap.iter (fun _ v ->
+		if snd (Ephemeron.get v).prg_obligations > 0 then incr i) m;
+  !i
+
+exception Found of program_info
+
+let map_first m =
+  try
+    ProgMap.iter (fun _ v ->
+		  if snd (Ephemeron.get v).prg_obligations > 0 then
+		    raise (Found v)) m;
+    assert(false)
+  with Found x -> x
+
 let get_prog name =
   let prg_infos = !from_prg in
     match name with
-- 
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