gcc-4.9/gcc/testsuite/gnat.dg/null_pointer_deref1.adb


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

-- { dg-do run }
-- { dg-options "-gnatp" }

-- This test requires architecture- and OS-specific support code for unwinding
-- through signal frames (typically located in *-unwind.h) to pass.  Feel free
-- to disable it if this code hasn't been implemented yet.

procedure Null_Pointer_Deref1 is
   type Int_Ptr is access all Integer;

   function Ident return Int_Ptr is
   begin
     return null;
   end;

   Data : Int_Ptr := Ident;
begin
   Data.all := 1;
exception
   when Constraint_Error | Storage_Error => null;
end;