From ee31c1d24e0c493bb777a58d871f5085222fbc4d Mon Sep 17 00:00:00 2001
From: Matthieu Sozeau
Date: Tue, 13 Feb 2018 11:15:16 +0100
Subject: Fix #6529: nf_evar_info and check the env evars' not just the concl

---
 test-suite/bugs/closed/6529.v | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 test-suite/bugs/closed/6529.v

(limited to 'test-suite')

diff --git a/test-suite/bugs/closed/6529.v b/test-suite/bugs/closed/6529.v
new file mode 100644
index 0000000000..8d90819998
--- /dev/null
+++ b/test-suite/bugs/closed/6529.v
@@ -0,0 +1,16 @@
+Require Import Vector Program.
+
+Program Definition append_nil_def :=
+  forall A n (ls: t A n), append ls (nil A) = ls. (* Works *)
+
+Lemma append_nil : append_nil_def. (* Works *)
+Proof.
+Admitted.
+
+Program Lemma append_nil' :
+  forall A n (ls: t A n), append ls (nil A) = ls.
+Abort.
+
+Fail Program Lemma append_nil'' :
+  forall A B n (ls: t A n), append ls (nil A) = ls.
+(* Error: Anomaly "Evar ?X25 was not declared." Please report at http://coq.inria.fr/bugs/. *)
-- 
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