From 02e9e5fb97a0342e370ea7ec0fff519b42edf097 Mon Sep 17 00:00:00 2001
From: Piotr Trojanek <trojanek@adacore.com>
Date: Wed, 3 Mar 2021 23:18:01 +0100
Subject: [PATCH] [Ada] Reject allocators in contexts restricted by SPARK

gcc/ada/

	* sem_ch4.adb (Analyze_Allocator): Reject allocators in
	restricted contexts.
---
 gcc/ada/sem_ch4.adb | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gcc/ada/sem_ch4.adb b/gcc/ada/sem_ch4.adb
index d849834..ede257b 100644
--- a/gcc/ada/sem_ch4.adb
+++ b/gcc/ada/sem_ch4.adb
@@ -889,6 +889,16 @@ package body Sem_Ch4 is
          Check_Restriction (No_Local_Allocators, N);
       end if;
 
+      if SPARK_Mode = On
+        and then Comes_From_Source (N)
+        and then not Is_OK_Volatile_Context (Context       => Parent (N),
+                                             Obj_Ref       => N,
+                                             Check_Actuals => False)
+      then
+         Error_Msg_N
+           ("allocator cannot appear in this context (SPARK RM 7.1.3(10))", N);
+      end if;
+
       if Serious_Errors_Detected > Sav_Errs then
          Set_Error_Posted (N);
          Set_Etype (N, Any_Type);
-- 
2.7.4