stdnoreturn.in.h revision 290000 
1/* A substitute for ISO C11 <stdnoreturn.h>.
2
3   Copyright 2012-2015 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU Lesser General Public License as published by
7   the Free Software Foundation; either version 2.1, or (at your option)
8   any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public License
16   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
17
18/* Written by Paul Eggert.  */
19
20#ifndef noreturn
21
22/* ISO C11 <stdnoreturn.h> for platforms that lack it.
23
24   References:
25   ISO C11 (latest free draft
26   <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf>)
27   section 7.23 */
28
29/* The definition of _Noreturn is copied here.  */
30
31#if 1200 <= _MSC_VER
32/* Standard include files on this platform contain declarations like
33   "__declspec (noreturn) void abort (void);".  "#define noreturn
34   _Noreturn" would cause this declaration to be rewritten to the
35   invalid "__declspec (__declspec (noreturn)) void abort (void);".
36   Instead, define noreturn to empty, so that such declarations are
37   rewritten to "__declspec () void abort (void);", which is
38   equivalent to "void abort (void);"; this gives up on noreturn's
39   advice to the compiler but at least it is valid code.  */
40# define noreturn /*empty*/
41#else
42# define noreturn _Noreturn
43#endif
44
45/* Did he ever return?
46   No he never returned
47   And his fate is still unlearn'd ...
48     -- Steiner J, Hawes BL.  M.T.A. (1949)  */
49
50#endif /* noreturn */
51