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