From: Steve Baird <baird@adacore.com>
Date: Tue, 6 Aug 2024 21:44:54 +0000 (-0700)
Subject: ada: Implicit_Dereference aspect specification for subtype incorrectly accepted
X-Git-Tag: basepoints/gcc-16~6440
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7dd9c7d1293ad16708748f617e10263e4ee88a39;p=thirdparty%2Fgcc.git

ada: Implicit_Dereference aspect specification for subtype incorrectly accepted

Implicit_Dereference is a type-specific aspect and therefore cannot be
legally specified as part of a subtype declaration.

gcc/ada/

	* sem_ch13.adb (Analyze_Aspect_Implicit_Dereference): Generate
	error if an aspect specification specifies the
	Implicit_Dereference aspect of a non-first subtype.
---

diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index 0546aa37de7..a55ba3c7bd9 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -1982,6 +1982,11 @@ package body Sem_Ch13 is
                   Error_Msg_N
                     ("aspect must apply to a type with discriminants", Expr);
 
+               elsif not Is_First_Subtype (E) then
+                  Error_Msg_N
+                    ("aspect not specifiable in a subtype declaration",
+                     Aspect);
+
                elsif not Is_Entity_Name (Expr) then
                   Error_Msg_N
                     ("aspect must name a discriminant of current type", Expr);