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diff gcc/ada/libgnat/a-ciorma.adb @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children 1830386684a0
line wrap: on
line diff
--- a/gcc/ada/libgnat/a-ciorma.adb	Fri Oct 27 22:46:09 2017 +0900
+++ b/gcc/ada/libgnat/a-ciorma.adb	Thu Oct 25 07:37:49 2018 +0900
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 2004-2017, Free Software Foundation, Inc.         --
+--          Copyright (C) 2004-2018, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -541,6 +541,14 @@
            "Position cursor of function Element is bad";
       end if;
 
+      if Checks
+        and then (Left (Position.Node) = Position.Node
+                   or else
+                  Right (Position.Node) = Position.Node)
+      then
+         raise Program_Error with "dangling cursor";
+      end if;
+
       pragma Assert (Vet (Position.Container.Tree, Position.Node),
                      "Position cursor of function Element is bad");