compiler-rt/test/BlocksRuntime/k-and-r.c

   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
  12 int 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 }