1 files changed, 15 insertions, 0 deletions
diff --git a/test-suite/failure/cofixpoint.v b/test-suite/failure/cofixpoint.v
new file mode 100644
index 00000000..cb39893f
--- /dev/null
+++ b/test-suite/failure/cofixpoint.v
@@ -0,0 +1,15 @@
+(* A bug in the guard checking of nested cofixpoints. *)
+(* Posted by Maxime Dénès on coqdev (Apr 9, 2014).    *)
+
+CoInductive CoFalse := .
+
+CoInductive CoTrue := I.
+
+Fail CoFixpoint loop : CoFalse :=
+  (cofix f := loop with g := loop for f).
+
+Fail CoFixpoint loop : CoFalse :=
+  (cofix f := I with g := loop for g).
+
+Fail CoFixpoint loop : CoFalse :=
+  (cofix f := loop with g := I for f).
+\ No newline at end of file