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1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNAT RUN-TIME COMPONENTS -- | |
4 | -- -- | |
5 | -- A D A . E X C E P T I O N S . I S _ N U L L _ O C C U R R E N C E -- | |
6 | -- -- | |
7 | -- B o d y -- | |
8 | -- -- | |
748086b7 | 9 | -- Copyright (C) 2000-2009 Free Software Foundation, Inc. -- |
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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- -- | |
748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
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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 -- | |
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16 | -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
17 | -- -- | |
18 | -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
19 | -- additional permissions described in the GCC Runtime Library Exception, -- | |
20 | -- version 3.1, as published by the Free Software Foundation. -- | |
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/>. -- | |
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26 | -- -- |
27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
71ff80dc | 28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
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29 | -- -- |
30 | ------------------------------------------------------------------------------ | |
31 | ||
32 | -- This is a GNAT-specific child function of Ada.Exceptions. It provides | |
33 | -- clearly missing functionality for its parent package, and most reasonably | |
34 | -- would simply be an added function to that package, but this change cannot | |
35 | -- be made in a conforming manner. | |
36 | ||
37 | function Ada.Exceptions.Is_Null_Occurrence | |
38 | (X : Exception_Occurrence) | |
39 | return Boolean | |
40 | is | |
41 | begin | |
42 | -- The null exception is uniquely identified by the fact that the Id | |
43 | -- value is null. No other exception occurrence can have a null Id. | |
44 | ||
45 | if X.Id = Null_Id then | |
46 | return True; | |
47 | else | |
48 | return False; | |
49 | end if; | |
50 | end Ada.Exceptions.Is_Null_Occurrence; |