Really fixing #2602 which was wrongly working because of #5487 hiding the cause.

The cause was a missing evar/evar clause in ltac pattern-matching
function (constr_matching.ml).

1 files changed, 13 insertions, 0 deletions

diff --git a/test-suite/success/ltac.v b/test-suite/success/ltac.v
index ce9099059..d7ec092d7 100644
--- a/test-suite/success/ltac.v
+++ b/test-suite/success/ltac.v
@@ -317,3 +317,16 @@ let T := constr:(fun a b : nat => a) in
   end.
 exact (eq_refl n).
 Qed.
+
+(* A variant of #2602 which was wrongly succeeding because "a", bound to
+   "?m", was then internally turned into a "_" in the second matching *)
+
+Goal exists m, S m > 0.
+eexists.
+Fail match goal with
+ | |- context [ S ?a ] =>
+     match goal with
+       | |- S a > a => idtac
+     end
+end.
+Abort.