blob: 9a304ef05b7bda32ace6db7599c4444a6642c476 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* A substitute for ISO C11 <stdnoreturn.h>.
Copyright 2012-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert. */
#ifndef noreturn
/* ISO C11 <stdnoreturn.h> for platforms that lack it.
References:
ISO C11 (latest free draft
<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf>)
section 7.23
<stdnoreturn.h> is obsolescent in C23, so new code should avoid it. */
/* The definition of _Noreturn is copied here. */
#if 1200 <= _MSC_VER || defined __CYGWIN__
/* On MSVC, standard include files contain declarations like
__declspec (noreturn) void abort (void);
"#define noreturn _Noreturn" would cause this declaration to be rewritten
to the invalid
__declspec (__declspec (noreturn)) void abort (void);
Similarly, on Cygwin, standard include files contain declarations like
void __cdecl abort (void) __attribute__ ((noreturn));
"#define noreturn _Noreturn" would cause this declaration to be rewritten
to the invalid
void __cdecl abort (void) __attribute__ ((__attribute__ ((__noreturn__))));
Instead, define noreturn to empty, so that such declarations are rewritten to
__declspec () void abort (void);
or
void __cdecl abort (void) __attribute__ (());
respectively. This gives up on noreturn's advice to the compiler but at
least it is valid code. */
# define noreturn /*empty*/
#else
# define noreturn _Noreturn
#endif
/* Did he ever return?
No he never returned
And his fate is still unlearn'd ...
-- Steiner J, Hawes BL. M.T.A. (1949) */
#endif /* noreturn */
|
