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  
      12  extern void abort (void);
      13  
      14  int 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  }