gcc/ada/

	* sem_ch3.adb (Analyze_Object_Declaration): Signal an error
	when an access to constant is used to initialize an access
	value.

    gcc/testsuite/
	* gnat.dg/specs/access_constant_decl.ads: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130677 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 14 insertions, 0 deletions

diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb
index 5c61d00943f..c16b4066d84 100644
--- a/gcc/ada/sem_ch3.adb
+++ b/gcc/ada/sem_ch3.adb
@@ -2364,6 +2364,20 @@ package body Sem_Ch3 is
 
          Set_Is_True_Constant (Id, True);
 
+         --  If the initialization expression is an access to constant,
+         --  it cannot be used with an access type.
+
+         if Is_Access_Type (Etype (E))
+           and then Is_Access_Constant (Etype (E))
+           and then Is_Access_Type (T)
+           and then not Is_Access_Constant (T)
+         then
+            Error_Msg_NE ("object of type& cannot be initialized with " &
+                          "an access-to-constant expression",
+                          E,
+                          T);
+         end if;
+
          --  If we are analyzing a constant declaration, set its completion
          --  flag after analyzing the expression.