From: Piotr Trojanek <trojanek@adacore.com>
Date: Tue, 25 Nov 2025 10:29:28 +0000 (+0100)
Subject: ada: Find overlying with slices
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=315965cf4e47118152e7e9bf7086ccf833cafa91;p=thirdparty%2Fgcc.git

ada: Find overlying with slices

A recent change removed rewriting of address of a slice into address of first
component of a slice. Now we need to explicitly detect overlying with slices.
Together, both changes cause warnings to be emitted when slice of a constant
object is overlaid by a variable.

gcc/ada/ChangeLog:

	* sem_util.adb (Find_Overlaid_Entity): Detect overlying with slice.
---

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 843bfb4a54b..ad7c0e647f0 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -9251,7 +9251,10 @@ package body Sem_Util is
 
          --  Check for components
 
-         elsif Nkind (Expr) in N_Selected_Component | N_Indexed_Component then
+         elsif Nkind (Expr) in N_Indexed_Component
+                             | N_Selected_Component
+                             | N_Slice
+         then
             Expr := Prefix (Expr);
             Off  := True;