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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [libmudflap/] [testsuite/] [libmudflap.c/] [pass51-frag.c] - Blame information for rev 816

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Line No. Rev Author Line
1 275 jeremybenn
/* Test object-spanning accesses.  This is most conveniently done with
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   mmap, thus the config.h specificity here.  */
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#include "../config.h"
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#include <unistd.h>
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#include <string.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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int main ()
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{
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#ifndef MAP_ANONYMOUS
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#define MAP_ANONYMOUS MAP_ANON
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#endif
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#ifndef MAP_FAILED
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#define MAP_FAILED ((void *)-1)
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#endif
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#ifdef HAVE_MMAP
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  void *p;
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  unsigned pg = getpagesize ();
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  int rc;
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  p = mmap (NULL, 4 * pg, PROT_READ|PROT_WRITE,
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            MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
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  if (p == MAP_FAILED)
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    return 1;
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  memset (p, 0, 4*pg);
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  rc = munmap (p, pg);
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  if (rc < 0) return 1;
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  memset (p+pg, 0, 3*pg);
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  rc = munmap (p+pg, pg);
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  if (rc < 0) return 1;
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  memset (p+2*pg, 0, 2*pg);
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  rc = munmap (p+2*pg, pg);
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  if (rc < 0) return 1;
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  memset (p+3*pg, 0, pg);
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  rc = munmap (p+3*pg, pg);
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  if (rc < 0) return 1;
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#endif
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  return 0;
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}

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