fixed bug #2375 (congruence)

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13399 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 18 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/shouldsucceed/2375.v b/test-suite/bugs/closed/shouldsucceed/2375.v
new file mode 100644
index 000000000..c17c426cd
--- /dev/null
+++ b/test-suite/bugs/closed/shouldsucceed/2375.v
@@ -0,0 +1,18 @@
+(* In the following code, the (superfluous) lemma [lem] is responsible 
+for the failure of congruence. *)
+
+Definition  f : nat -> Prop := fun x => True.
+
+Lemma lem : forall x,  (True -> True)   = ( True ->  f x).
+Proof.
+  intros. reflexivity.
+Qed.
+
+Goal forall  (x:nat), x = x.
+Proof.
+  intros.
+  assert (lem := lem).
+  (*clear ax.*)
+  congruence.
+Qed.
+