1//
2// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3// See https://llvm.org/LICENSE.txt for license information.
4// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
5
6// -*- mode:C; c-basic-offset:4; tab-width:4; intent-tabs-mode:nil; -*-
7// CONFIG error: incompatible block pointer types assigning
8
9#import <stdio.h>
10#import <stdlib.h>
11
12int main(int argc, char *argv[]) {
13#ifndef __cplusplus
14 char (^rot13)();
15 rot13 = ^(char c) { return (char)(((c - 'a' + 13) % 26) + 'a'); };
16 char n = rot13('a');
17 char c = rot13('p');
18 if ( n != 'n' || c != 'c' ) {
19 printf("%s: rot13('a') returned %c, rot13('p') returns %c\n", argv[0], n, c);
20 exit(1);
21 }
22#else
23// yield characteristic error message for C++
24#error incompatible block pointer types assigning
25#endif
26#ifndef __clang__
27// yield characteristic error message for C++
28#error incompatible block pointer types assigning
29#endif
30 printf("%s: success\n", argv[0]);
31 exit(0);
32}
33