Viewing file:  charconst-3.c (1.11 KB) -rw-r--r--
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/* Copyright (C) 2001 Free Software Foundation, Inc. */
/* { dg-do run } */
/* { dg-options -Wno-multichar } */
/* This tests values and signedness of multichar charconsts.
Neil Booth, 5 May 2002. */
#include <limits.h>
extern void abort (void);
int main ()
{
/* These tests require at least 2-byte ints. 8-) */
#if INT_MAX > 127
int scale = (int) (unsigned char) -1 + 1;
if ('ab' != (int) ((unsigned char) 'a' * scale + (unsigned char) 'b'))
abort ();
if ('\234b' != (int) ((unsigned char) '\234' * scale + (unsigned char) 'b'))
abort ();
if ('b\234' != (int) ((unsigned char) 'b' * scale + (unsigned char) '\234'))
abort ();
/* Multichar charconsts have type int and should be signed. */
#if INT_MAX == 32767
# if '\234a' > 0
# error Preprocessor charconsts 1
# endif
if ('\234a' > 0)
abort ();
#elif INT_MAX == 2147483647
# if '\234aaa' > 0
# error Preprocessor charconsts 2
# endif
if ('\234aaa' > 0)
abort ();
#elif INT_MAX == 9223372036854775807
# if '\234aaaaaaa' > 0
# error Preprocessor charconsts 3
# endif
if ('\234aaaaaaa' > 0)
abort ();
#endif
#endif
return 0;
}
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