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111
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1 /* Copyright (C) 2001 Free Software Foundation, Inc. */
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2
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3 /* { dg-do run } */
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4 /* { dg-options -Wno-multichar } */
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5
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6 /* This tests values and signedness of multichar charconsts.
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7
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8 Neil Booth, 5 May 2002. */
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9
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10 #include <limits.h>
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11
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12 extern void abort (void);
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13
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14 int main ()
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15 {
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16 /* These tests require at least 2-byte ints. 8-) */
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17 #if INT_MAX > 127
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18 int scale = (int) (unsigned char) -1 + 1;
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19
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20 if ('ab' != (int) ((unsigned char) 'a' * scale + (unsigned char) 'b'))
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21 abort ();
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22
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23 if ('\234b' != (int) ((unsigned char) '\234' * scale + (unsigned char) 'b'))
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24 abort ();
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25
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26 if ('b\234' != (int) ((unsigned char) 'b' * scale + (unsigned char) '\234'))
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27 abort ();
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28 /* Multichar charconsts have type int and should be signed. */
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29 #if INT_MAX == 32767
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30 # if '\234a' > 0
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31 # error Preprocessor charconsts 1
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32 # endif
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33 if ('\234a' > 0)
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34 abort ();
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35 #elif INT_MAX == 2147483647
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36 # if '\234aaa' > 0
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37 # error Preprocessor charconsts 2
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38 # endif
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39 if ('\234aaa' > 0)
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40 abort ();
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41 #elif INT_MAX == 9223372036854775807
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42 # if '\234aaaaaaa' > 0
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43 # error Preprocessor charconsts 3
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44 # endif
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45 if ('\234aaaaaaa' > 0)
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46 abort ();
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47 #endif
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48 #endif
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49 return 0;
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50 }
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