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-rw-r--r--bytecomp/instruct.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/bytecomp/instruct.ml b/bytecomp/instruct.ml
index 9fd2cb940..4f4fa14fa 100644
--- a/bytecomp/instruct.ml
+++ b/bytecomp/instruct.ml
@@ -26,6 +26,7 @@ type debug_event =
ev_kind: debug_event_kind; (* Before/after event *)
ev_info: debug_event_info; (* Extra information *)
ev_typenv: Env.summary; (* Typing environment *)
+ ev_typsubst: Subst.t; (* Substitution over types *)
ev_compenv: compilation_env; (* Compilation environment *)
ev_stacksize: int; (* Size of stack frame *)
ev_repr: debug_event_repr } (* Position of the representative *)