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-rw-r--r--nss/nsswitch.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/nss/nsswitch.h b/nss/nsswitch.h
index d95d43219e..c4d4d11193 100644
--- a/nss/nsswitch.h
+++ b/nss/nsswitch.h
@@ -60,7 +60,9 @@ typedef struct service_library
 } service_library;
 
 
-/* For mappng a function name to a function pointer.  */
+/* For mapping a function name to a function pointer.  It is known in
+   nsswitch.c:nss_lookup_function that a string pointer for the lookup key
+   is the first member.  */
 typedef struct
 {
   const char *fct_name;