diff options
author | Enrico Tassi <gareuselesinge@debian.org> | 2015-01-25 14:42:51 +0100 |
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committer | Enrico Tassi <gareuselesinge@debian.org> | 2015-01-25 14:42:51 +0100 |
commit | 7cfc4e5146be5666419451bdd516f1f3f264d24a (patch) | |
tree | e4197645da03dc3c7cc84e434cc31d0a0cca7056 /test-suite/bugs/closed/2670.v | |
parent | 420f78b2caeaaddc6fe484565b2d0e49c66888e5 (diff) |
Imported Upstream version 8.5~beta1+dfsg
Diffstat (limited to 'test-suite/bugs/closed/2670.v')
-rw-r--r-- | test-suite/bugs/closed/2670.v | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/2670.v b/test-suite/bugs/closed/2670.v new file mode 100644 index 00000000..c401420e --- /dev/null +++ b/test-suite/bugs/closed/2670.v @@ -0,0 +1,21 @@ +(* Check that problems with several solutions are solved in 8.4 as in 8.2 and 8.3 *) + +Inductive Fin: nat -> Set := +| first k : Fin (S k) +| succ k: Fin k -> Fin (S k). + +Lemma match_sym_eq_eq: forall (n1 n2: nat)(f: Fin n1)(e: n1 = n2), +f = match sym_eq e in (_ = l) return (Fin l) with refl_equal => + match e in (_ = l) return (Fin l) with refl_equal => f end end. +Proof. + intros n1 n2 f e. + (* Next line has a dependent and a non dependent solution *) + (* 8.2 and 8.3 used to choose the dependent one which is the one to make *) + (* the goal progress *) + refine (match e return _ with refl_equal => _ end). + reflexivity. + Undo 2. + (* Next line similarly has a dependent and a non dependent solution *) + refine (match e with refl_equal => _ end). + reflexivity. +Qed. |