56 lines
1023 B
C
56 lines
1023 B
C
/* { dg-do run } */
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/* { dg-options "-O2" } */
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/* { dg-additional-options "-minline-all-stringops" { target { i?86-*-* x86_64-*-* } } } */
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extern void abort (void);
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#define MAX_OFFSET (sizeof (long long))
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#define MAX_COPY (8 * sizeof (long long))
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#define MAX_EXTRA (sizeof (long long))
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#define MAX_LENGTH (MAX_OFFSET + MAX_COPY + MAX_EXTRA)
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static union {
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char buf[MAX_LENGTH];
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long long align_int;
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long double align_fp;
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} u;
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char A[MAX_LENGTH];
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int
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main ()
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{
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int off, len, i;
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char *p, *q;
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for (i = 0; i < MAX_LENGTH; i++)
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A[i] = 'A';
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for (off = 0; off < MAX_OFFSET; off++)
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for (len = 1; len < MAX_COPY; len++)
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{
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for (i = 0; i < MAX_LENGTH; i++)
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u.buf[i] = 'a';
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p = __builtin_memcpy (u.buf + off, A, len);
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if (p != u.buf + off)
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abort ();
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q = u.buf;
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for (i = 0; i < off; i++, q++)
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if (*q != 'a')
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abort ();
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for (i = 0; i < len; i++, q++)
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if (*q != 'A')
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abort ();
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for (i = 0; i < MAX_EXTRA; i++, q++)
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if (*q != 'a')
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abort ();
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}
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return 0;
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}
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