@@ -22367,9 +22367,15 @@ package body Sem_Util is
-- Start of processing for Null_Status
begin
+ -- Prevent cascaded errors or infinite loops when trying to determine
+ -- the null status of an erroneous construct.
+
+ if Error_Posted (N) then
+ return Unknown;
+
-- An allocator always creates a non-null value
- if Nkind (N) = N_Allocator then
+ elsif Nkind (N) = N_Allocator then
return Is_Non_Null;
-- Taking the 'Access of something yields a non-null value
new file mode 100644
@@ -0,0 +1,11 @@
+-- { dg-do compile }
+
+procedure Self_Ref1 is
+ type Integer_Ptr is access all Integer;
+ Ptr : constant Integer_Ptr := Integer_Ptr (Ptr); -- { dg-error "object \"Ptr\" cannot be used before end of its declaration" }
+
+begin
+ if Ptr /= null then
+ null;
+ end if;
+end Self_Ref1;