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authorGravatar Maxime Dénès <mail@maximedenes.fr>2014-04-09 17:42:32 -0400
committerGravatar Maxime Dénès <mail@maximedenes.fr>2014-04-09 17:42:32 -0400
commit30d42837c0ae46aa563761ba20e481f7199d6652 (patch)
tree1890e755cf28d8091c0f7f47cc52d5d0c944052d /test-suite/failure
parentb89502c9f2bf56ee89b7e280815c339ef7b8947c (diff)
Add another critical bug to the test-suite.
I have a fix, I'm reviewing it because there may be other bugs around.
Diffstat (limited to 'test-suite/failure')
-rw-r--r--test-suite/failure/cofixpoint.v15
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 000000000..cb39893f4
--- /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