Test backtracking

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@4062 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 13 insertions, 0 deletions

diff --git a/test-suite/success/ltac.v b/test-suite/success/ltac.v
index e93be7763e..880f92fdd9 100644
--- a/test-suite/success/ltac.v
+++ b/test-suite/success/ltac.v
@@ -42,3 +42,16 @@ Z. (* Apply H0 *)
 Y. (* Apply H *)
 Exact I.
 Qed.
+
+(* Check backtracking *)
+Lemma back1 : (0)=(1)->(0)=(0)->(1)=(1)->(0)=(0).
+Intros; Match Context With [_:(O)=?1;_:(1)=(1)|-? ] -> Exact (refl_equal ? ?1).
+Qed.
+
+Lemma back2 : (0)=(0)->(0)=(1)->(1)=(1)->(0)=(0).
+Intros; Match Context With [_:(O)=?1;_:(1)=(1)|-? ] -> Exact (refl_equal ? ?1).
+Qed.
+
+Lemma back3 : (0)=(0)->(1)=(1)->(0)=(1)->(0)=(0).
+Intros; Match Context With [_:(O)=?1;_:(1)=(1)|-? ] -> Exact (refl_equal ? ?1).
+Qed.