1/* Copyright (C) 2001 Free Software Foundation, Inc.  */
2
3/* { dg-do run } */
4/* { dg-options -Wno-multichar } */
5
6/* This tests values and signedness of multichar charconsts.
7
8   Neil Booth, 5 May 2002.  */
9
10#include <limits.h>
11
12extern void abort (void);
13
14int main ()
15{
16  /* These tests require at least 2-byte ints.  8-)  */
17#if INT_MAX > 127
18  int scale = (int) (unsigned char) -1 + 1;
19
20  if ('ab' != (int) ((unsigned char) 'a' * scale + (unsigned char) 'b'))
21    abort ();
22
23  if ('\234b' != (int) ((unsigned char) '\234' * scale + (unsigned char) 'b'))
24    abort ();
25
26  if ('b\234' != (int) ((unsigned char) 'b' * scale + (unsigned char) '\234'))
27    abort ();
28  /* Multichar charconsts have type int and should be signed.  */
29#if INT_MAX == 32767
30# if '\234a' > 0
31#  error Preprocessor charconsts 1
32# endif
33  if ('\234a' > 0)
34    abort ();
35#elif INT_MAX == 2147483647
36# if '\234aaa' > 0
37#  error Preprocessor charconsts 2
38# endif
39  if ('\234aaa' > 0)
40    abort ();
41#elif INT_MAX == 9223372036854775807
42# if '\234aaaaaaa' > 0
43#  error Preprocessor charconsts 3
44# endif
45  if ('\234aaaaaaa' > 0)
46    abort ();
47#endif
48#endif
49  return 0;
50}
51