Printmod: fresh fake namespaces for non-visible modules (fix #2668, #2983)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16328 85f007b7-540e-0410-9357-904b9bb8a0f7

3 files changed, 22 insertions, 1 deletions

diff --git a/printing/printmod.ml b/printing/printmod.ml
index 0c28e64f6..e9fc35e2f 100644
--- a/printing/printmod.ml
+++ b/printing/printmod.ml
@@ -69,8 +69,15 @@ let print_kn locals kn =
 	with
 	    Not_found -> print_modpath locals kn
 
+(** Each time we have to print a non-globally visible structure,
+    we place its elements in a fake fresh namespace. *)
+
+let mk_fake_top =
+  let r = ref 0 in
+  fun () -> incr r; Id.of_string ("FAKETOP"^(string_of_int !r))
+
 let nametab_register_dir mp =
-  let id = Id.of_string "FAKETOP" in
+  let id = mk_fake_top () in
   let fp = Libnames.make_path DirPath.empty id in
   let dir = DirPath.make [id] in
   Nametab.push_dir (Nametab.Until 1) dir (DirModule (dir,(mp,DirPath.empty)));
diff --git a/test-suite/bugs/closed/shouldsucceed/2668.v b/test-suite/bugs/closed/shouldsucceed/2668.v
new file mode 100644
index 000000000..74c8fa347
--- /dev/null
+++ b/test-suite/bugs/closed/shouldsucceed/2668.v
@@ -0,0 +1,6 @@
+Require Import MSetPositive.
+Require Import MSetProperties.
+
+Module Pos := MSetPositive.PositiveSet.
+Module PPPP := MSetProperties.WPropertiesOn(Pos).
+Print Module PPPP.
\ No newline at end of file
diff --git a/test-suite/bugs/closed/shouldsucceed/2983.v b/test-suite/bugs/closed/shouldsucceed/2983.v
new file mode 100644
index 000000000..15598352b
--- /dev/null
+++ b/test-suite/bugs/closed/shouldsucceed/2983.v
@@ -0,0 +1,8 @@
+Module Type ModA.
+End ModA.
+Module Type ModB(A : ModA).
+End ModB.
+Module Foo(A : ModA)(B : ModB A).
+End Foo.
+
+Print Module Foo.
\ No newline at end of file