[COMMITTED 08/26] ada: Fix handling reference warnings with slices

[Marc Poulhiès]

From: Viljar Indus <in...@adacore.com>

gcc/ada/

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

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_util.adb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 7901eb8ee38..7b575c09c30 100644
--- 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.
-- 
2.45.2