ada: Fix handling reference warnings with slices

gcc/ada/

	* sem_util.adb (Set_Referenced_Modified): Set referenced as LHS
	for the prefixes of array slices.

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 7901eb8ee387da53202b39fc638e60174286a78d..7b575c09c30295f432c884e350d82854b2c23ece 100644 (file)
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -27787,9 +27787,10 @@ package body Sem_Util is
       Pref : Node_Id;
 
    begin
-      --  Deal with indexed or selected component where prefix is modified
+      --  Deal with indexed components, selected components, or slices where
+      --  the prefix is modified.
 
-      if Nkind (N) in N_Indexed_Component | N_Selected_Component then
+      if Nkind (N) in N_Indexed_Component | N_Selected_Component | N_Slice then
 
          --  Grab the original node to avoid looking at internally generated
          --  objects.