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-rw-r--r--pretyping/patternops.ml4
-rw-r--r--test-suite/bugs/closed/5345.v7
-rw-r--r--test-suite/success/ltac_match_pattern_names.v28
3 files changed, 38 insertions, 1 deletions
diff --git a/pretyping/patternops.ml b/pretyping/patternops.ml
index 9dcb5d2a5..977d3dae1 100644
--- a/pretyping/patternops.ml
+++ b/pretyping/patternops.ml
@@ -404,7 +404,9 @@ let rec pat_of_raw metas vars = function
and pats_of_glob_branches loc metas vars ind brs =
let get_arg = function
- | PatVar(_,na) -> na
+ | PatVar(_,na) ->
+ name_iter (fun n -> metas := n::!metas) na;
+ na
| PatCstr(loc,_,_,_) -> err ~loc (Pp.str "Non supported pattern.")
in
let rec get_pat indexes = function
diff --git a/test-suite/bugs/closed/5345.v b/test-suite/bugs/closed/5345.v
new file mode 100644
index 000000000..d8448f35d
--- /dev/null
+++ b/test-suite/bugs/closed/5345.v
@@ -0,0 +1,7 @@
+Ltac break_tuple :=
+ match goal with
+ | [ H: context[match ?a with | pair n m => _ end] |- _ ] =>
+ let n := fresh n in
+ let m := fresh m in
+ destruct a as [n m]
+ end.
diff --git a/test-suite/success/ltac_match_pattern_names.v b/test-suite/success/ltac_match_pattern_names.v
new file mode 100644
index 000000000..736329496
--- /dev/null
+++ b/test-suite/success/ltac_match_pattern_names.v
@@ -0,0 +1,28 @@
+(* example from bug 5345 *)
+Ltac break_tuple :=
+ match goal with
+ | [ H: context[let '(n, m) := ?a in _] |- _ ] =>
+ let n := fresh n in
+ let m := fresh m in
+ destruct a as [n m]
+ end.
+
+(* desugared version of break_tuple *)
+Ltac break_tuple' :=
+ match goal with
+ | [ H: context[match ?a with | pair n m => _ end] |- _ ] =>
+ let n := fresh n in
+ let m := fresh m in
+ idtac
+ end.
+
+Ltac multiple_branches :=
+ match goal with
+ | [ H: match _ with
+ | left P => _
+ | right Q => _
+ end |- _ ] =>
+ let P := fresh P in
+ let Q := fresh Q in
+ idtac
+ end. \ No newline at end of file