xref: /llvm-project/compiler-rt/test/BlocksRuntime/varargs-bad-assign.c (revision 2946cd701067404b99c39fb29dc9c74bd7193eb3)
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 // HACK ALERT: gcc and g++ give different errors, referencing the line number to ensure that it checks for the right error; MUST KEEP IN SYNC WITH THE TEST
8 // CONFIG 27: error:
9 
10 #import <stdio.h>
11 #import <stdlib.h>
12 #import <string.h>
13 #import <stdarg.h>
14 
15 
main(int argc,const char * argv[])16 int main (int argc, const char * argv[]) {
17     int (^sumn)(int n, ...);
18     int six = 0;
19 
20     sumn = ^(int a, int b, int n, ...){
21         int result = 0;
22         va_list numbers;
23         int i;
24 
25         va_start(numbers, n);
26         for (i = 0 ; i < n ; i++) {
27             result += va_arg(numbers, int);
28         }
29         va_end(numbers);
30 
31         return result;
32     };
33 
34     six = sumn(3, 1, 2, 3);
35 
36     if ( six != 6 ) {
37         printf("%s: Expected 6 but got %d\n", argv[0], six);
38         exit(1);
39     }
40 
41     printf("%s: success\n", argv[0]);
42     return 0;
43 }
44