File : a-elchha-zfp.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- A D A . E X C E P T I O N S . L A S T _ C H A N C E _ H A N D L E R --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2012-2014, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- Default last chance handler for no propagation runtimes
33
34 with Ada.Unchecked_Conversion;
35 with System.Machine_Reset;
36
37 with GNAT.IO; use GNAT.IO;
38 -- We rely on GNAT packages for the output. Usually, Ada predefined units
39 -- cannot depends on GNAT units, as the user could use the GNAT hierarchy.
40 -- However, this implementation of Last_Chance_Handler is a default one, that
41 -- could be redefined by the user.
42
43 procedure Ada.Exceptions.Last_Chance_Handler
44 (Msg : System.Address; Line : Integer)
45 is
46 procedure Put (Str : System.Address);
47 -- Put for a nul-terminated string (a C string)
48
49 ---------
50 -- Put --
51 ---------
52
53 procedure Put (Str : System.Address) is
54 type C_String_Ptr is access String (1 .. Positive'Last);
55 function To_C_String_Ptr is new Ada.Unchecked_Conversion
56 (System.Address, C_String_Ptr);
57
58 Msg_Str : constant C_String_Ptr := To_C_String_Ptr (Str);
59
60 begin
61 for J in Msg_Str'Range loop
62 exit when Msg_Str (J) = Character'Val (0);
63 Put (Msg_Str (J));
64 end loop;
65 end Put;
66
67 begin
68 Put_Line ("In last chance handler");
69
70 if Line /= 0 then
71 Put ("Predefined exception raised at ");
72 Put (Msg);
73 Put (':');
74 Put (Line);
75 else
76 Put ("User defined exception, message: ");
77 Put (Msg);
78 end if;
79
80 New_Line;
81
82 -- Stop the program
83
84 System.Machine_Reset.Stop;
85 end Ada.Exceptions.Last_Chance_Handler;