1 files changed, 11 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_array.h b/source/blender/blenlib/BLI_array.h
index d3bb3401d7e..80e865ded62 100644
--- a/source/blender/blenlib/BLI_array.h
+++ b/source/blender/blenlib/BLI_array.h
@@ -146,6 +146,17 @@ void _bli_array_grow_func(void **arr_p,
  */
 #define BLI_array_fake_user(arr) ((void)_##arr##_len, (void)_##arr##_static)
 
+/**
+ * Trim excess items from the array (when they exist).
+ */
+#define BLI_array_trim(arr) \
+  { \
+    if (_bli_array_totalsize_dynamic(arr) != _##arr##_len) { \
+      arr = MEM_reallocN(arr, sizeof(*arr) * _##arr##_len); \
+    } \
+  } \
+  ((void)0)
+
 /** \} */
 
 /* -------------------------------------------------------------------- */