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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.c-torture/] [execute/] [loop-2f.c] - Blame information for rev 297

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Line No. Rev Author Line
1 297 jeremybenn
#include <limits.h>
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#ifdef __unix__ /* ??? Is that good enough? */
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#ifndef MAP_ANON
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#ifdef MAP_ANONYMOUS
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#define MAP_ANON MAP_ANONYMOUS
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#else
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#define MAP_ANON MAP_FILE
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#endif
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#endif
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#ifndef MAP_FILE
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#define MAP_FILE 0
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#endif
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#ifndef MAP_FIXED
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#define MAP_FIXED 0
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#endif
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#endif
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#define MAP_START (void *)0x7fff8000
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#define MAP_LEN 0x10000
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#define OFFSET (MAP_LEN/2 - 2 * sizeof (char));
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f (int s, char *p)
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{
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  int i;
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  for (i = s; i >= 0 && &p[i] < &p[40]; i++)
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    {
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      p[i] = -2;
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    }
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}
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main ()
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{
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#ifdef MAP_ANON
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  char *p;
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  int dev_zero;
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  dev_zero = open ("/dev/zero", O_RDONLY);
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  /* -1 is OK when we have MAP_ANON; else mmap will flag an error.  */
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  if (INT_MAX != 0x7fffffffL || sizeof (char *) != sizeof (int))
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    exit (0);
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  p = mmap (MAP_START, MAP_LEN, PROT_READ|PROT_WRITE,
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            MAP_ANON|MAP_FIXED|MAP_PRIVATE, dev_zero, 0);
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  if (p != (char *)-1)
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    {
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      p += OFFSET;
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      p[39] = 0;
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      f (0, p);
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      if (p[39] != (char)-2)
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        abort ();
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      p[39] = 0;
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      f (-1, p);
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      if (p[39] != 0)
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        abort ();
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    }
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#endif
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  exit (0);
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}

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