compiler-rt/test/BlocksRuntime/varargs.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
   8
   9 #import <stdio.h>
  10 #import <stdlib.h>
  11 #import <string.h>
  12 #import <stdarg.h>
  13
  14
  15 int main (int argc, const char * argv[]) {
  16     int (^sumn)(int n, ...) = ^(int n, ...){
  17         int result = 0;
  18         va_list numbers;
  19         int i;
  20
  21         va_start(numbers, n);
  22         for (i = 0 ; i < n ; i++) {
  23             result += va_arg(numbers, int);
  24         }
  25         va_end(numbers);
  26
  27         return result;
  28     };
  29     int six = sumn(3, 1, 2, 3);
  30
  31     if ( six != 6 ) {
  32         printf("%s: Expected 6 but got %d\n", argv[0], six);
  33         exit(1);
  34     }
  35
  36     printf("%s: success\n", argv[0]);
  37     return 0;
  38 }