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-rw-r--r--src/itree.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/itree.h b/src/itree.h
index d685a69eb78..80115aa467c 100644
--- a/src/itree.h
+++ b/src/itree.h
@@ -46,7 +46,7 @@ struct interval_node
ptrdiff_t offset; /* The amount of shift to apply to this subtree. */
uintmax_t otick; /* offset modified tick */
Lisp_Object data; /* Exclusively used by the client. */
- bool_bf visited; /* For traversal via generator. */
+ bool_bf visited : 1; /* For traversal via generator. */
bool_bf rear_advance : 1; /* Same as for marker and overlays. */
bool_bf front_advance : 1; /* Same as for marker and overlays. */
};