test/BlocksRuntime/k-and-r.c

   1 //
   2 //                     The LLVM Compiler Infrastructure
   3 //
   4 // This file is distributed under the University of Illinois Open Source
   5 // License. See LICENSE.TXT for details.
   6
   7 //  -*- mode:C; c-basic-offset:4; tab-width:4; intent-tabs-mode:nil;  -*-
   8 // CONFIG error: incompatible block pointer types assigning
   9
  10 #import <stdio.h>
  11 #import <stdlib.h>
  12
  13 int main(int argc, char *argv[]) {
  14 #ifndef __cplusplus
  15     char (^rot13)();
  16     rot13 = ^(char c) { return (char)(((c - 'a' + 13) % 26) + 'a'); };
  17     char n = rot13('a');
  18     char c = rot13('p');
  19     if ( n != 'n' || c != 'c' ) {
  20         printf("%s: rot13('a') returned %c, rot13('p') returns %c\n", argv[0], n, c);
  21         exit(1);
  22     }
  23 #else
  24 // yield characteristic error message for C++
  25 #error incompatible block pointer types assigning
  26 #endif
  27 #ifndef __clang__
  28 // yield characteristic error message for C++
  29 #error incompatible block pointer types assigning
  30 #endif
  31     printf("%s: success\n", argv[0]);
  32     exit(0);
  33 }