Subversion Repositories openrisc

/* Copyright (C) 2002  Free Software Foundation.

   Test strcpy with various combinations of pointer alignments and lengths to

   make sure any optimizations in the library are correct.  */

#include <string.h>

#ifndef MAX_OFFSET

#define MAX_OFFSET (sizeof (long long))

#endif

#ifndef MAX_COPY

#define MAX_COPY (10 * sizeof (long long))

#endif

#ifndef MAX_EXTRA

#define MAX_EXTRA (sizeof (long long))

#endif

#define MAX_LENGTH (MAX_OFFSET + MAX_COPY + 1 + MAX_EXTRA)

/* Use a sequence length that is not divisible by two, to make it more

   likely to detect when words are mixed up.  */

#define SEQUENCE_LENGTH 31

static union {

  char buf[MAX_LENGTH];

  long long align_int;

  long double align_fp;

} u1, u2;

main ()

{

  int off1, off2, len, i;

  char *p, *q, c;

  for (off1 = 0; off1 < MAX_OFFSET; off1++)

    for (off2 = 0; off2 < MAX_OFFSET; off2++)

      for (len = 1; len < MAX_COPY; len++)

        {

          for (i = 0, c = 'A'; i < MAX_LENGTH; i++, c++)

            {

              u1.buf[i] = 'a';

              if (c >= 'A' + SEQUENCE_LENGTH)

                c = 'A';

              u2.buf[i] = c;

            }

          u2.buf[off2 + len] = '\0';

          p = strcpy (u1.buf + off1, u2.buf + off2);

          if (p != u1.buf + off1)

            abort ();

          q = u1.buf;

          for (i = 0; i < off1; i++, q++)

            if (*q != 'a')

              abort ();

          for (i = 0, c = 'A' + off2; i < len; i++, q++, c++)

            {

              if (c >= 'A' + SEQUENCE_LENGTH)

                c = 'A';

              if (*q != c)

                abort ();

            }

          if (*q++ != '\0')

            abort ();

          for (i = 0; i < MAX_EXTRA; i++, q++)

            if (*q != 'a')

              abort ();

        }

  exit (0);

}