xref: /freebsd/contrib/expat/lib/fallthrough.h (revision 207d96dabfec14d7b3699747abb539ab3c1118ab)
1 /*
2                             __  __            _
3                          ___\ \/ /_ __   __ _| |_
4                         / _ \\  /| '_ \ / _` | __|
5                        |  __//  \| |_) | (_| | |_
6                         \___/_/\_\ .__/ \__,_|\__|
7                                  |_| XML parser
8 
9    Copyright (c) 2026 Nick Begg <nick@stunttruck.net>
10    Licensed under the MIT license:
11 
12    Permission is  hereby granted,  free of charge,  to any  person obtaining
13    a  copy  of  this  software   and  associated  documentation  files  (the
14    "Software"),  to  deal in  the  Software  without restriction,  including
15    without  limitation the  rights  to use,  copy,  modify, merge,  publish,
16    distribute, sublicense, and/or sell copies of the Software, and to permit
17    persons  to whom  the Software  is  furnished to  do so,  subject to  the
18    following conditions:
19 
20    The above copyright  notice and this permission notice  shall be included
21    in all copies or substantial portions of the Software.
22 
23    THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
24    EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
25    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
26    NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
27    DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
28    OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
29    USE OR OTHER DEALINGS IN THE SOFTWARE.
30 
31    SPDX-License-Identifier: MIT
32 */
33 
34 #ifndef FALLTHROUGH_H
35 #  define FALLTHROUGH_H 1
36 
37 // Explicit fallthrough in switch case to avoid warnings
38 // with compiler flag -Wimplicit-fallthrough.
39 
40 #  define EXPAT_FALLTHROUGH                                                    \
41     do {                                                                       \
42     } while (0)
43 
44 #  if defined(__has_attribute)
45 #    if __has_attribute(fallthrough)
46 #      undef EXPAT_FALLTHROUGH
47 #      define EXPAT_FALLTHROUGH __attribute__((fallthrough))
48 #    endif
49 #  endif
50 
51 #endif // FALLTHROUGH_H
52