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diff --git a/lib/uninorm/normalize-internal.h b/lib/uninorm/normalize-internal.h
index e1ef9c4..0533863 100644 (file)
--- a/lib/uninorm/normalize-internal.h
+++ b/lib/uninorm/normalize-internal.h
@@ -22,7 +22,8 @@
 /* Complete definition of normalization form descriptor.  */
 struct unicode_normalization_form
 {
-  /* Bit mask containing meta-information.  */
+  /* Bit mask containing meta-information.
+     This must be the first field.  */
   unsigned int description;
   #define NF_IS_COMPAT_DECOMPOSING  (1 << 0)
   #define NF_IS_COMPOSING           (1 << 1)