-/* Copyright (C) 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1990, 1991, 1992, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
Contributed by Torbjorn Granlund (tege@sics.se).
-This file is part of the GNU C Library.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-#include <ansidecl.h>
#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
#include <malloc.h>
int
-DEFUN(main, (argc, argv),
- int argc AND char **argv)
+main (void)
{
- if (argc > 1)
+ char *mem, *memp;
+ char *rand_mem;
+ char *lo_around, *hi_around;
+ int size, max_size;
+ int src_off, dst_off;
+ int i;
+ int space_around = 10;
+
+ max_size = 256;
+
+ mem = malloc (max_size + 2 * max_size + 2 * space_around);
+ rand_mem = malloc (max_size);
+ lo_around = malloc (space_around);
+ hi_around = malloc (space_around);
+ memp = mem + space_around;
+
+ /* Fill RAND_MEM with random bytes, each non-zero. */
+ for (i = 0; i < max_size; i++)
{
- long int s[1025], d[1025];
- int i;
- int a, b = 0;
-
- a = atoi(argv[1]);
- if (argc > 2)
- b = atoi(argv[2]);
-
- for (i = 10000; --i; )
- memmove (((char *) d) + b, ((char *) s) + a, 1024 * 4);
+ int x;
+ do
+ x = random ();
+ while (x == 0);
+ rand_mem[i] = x;
}
- else
- {
-#define SIZE (3*0x200)
- unsigned char *p = valloc(SIZE + 40);
- int src_align, dst_align;
- int i;
- int len;
-
- for (len = 0; len < 256; len++)
+ for (size = 0; size < max_size; size++)
+ {
+ printf("phase %d\n", size);
+ for (src_off = 0; src_off <= 16; src_off++)
{
- printf("phase %d\n", len);
- for (src_align = 0; src_align < 32; src_align++)
+ for (dst_off = 0; dst_off <= 16; dst_off++)
{
- unsigned char *src;
+ /* Put zero around the intended destination, to check
+ that it's not clobbered. */
+ for (i = 1; i < space_around; i++)
+ {
+ memp[dst_off - i] = 0;
+ memp[dst_off + size - 1 + i] = 0;
+ }
- src = p + 40 + SIZE/3 + src_align;
+ /* Fill the source area with known contents. */
+ for (i = 0; i < size; i++)
+ memp[src_off + i] = rand_mem[i];
- for (dst_align = 0; dst_align < 32; dst_align++)
+ /* Remember the contents around the destination area.
+ (It might not be what we wrote some lines above, since
+ the src area and the dst area overlap.) */
+ for (i = 1; i < space_around; i++)
{
- unsigned char *dst;
-
- memset (p, 0, SIZE + 40);
- for (i = 0; i < len; i++)
- src[i] = i;
-
- dst = p + 40 + dst_align;
- memmove (dst, src, len);
-
- for (i = -32; i < 0; i++)
- if (dst[i] != 0)
- abort();
- for (i = 0; i < len; i++)
- if (dst[i] != i)
- abort();
- for (i = 32; i >= 0; i--)
- if (dst[len + i] != 0)
- abort();
-
- memset (p, 0, SIZE + 40);
- for (i = 0; i < len; i++)
- src[i] = i;
-
- dst = p + 40 + SIZE/3*2 + dst_align;
- memmove (dst, src, len);
-
- for (i = -32; i < 0; i++)
- if (dst[i] != 0)
- abort();
- for (i = 0; i < len; i++)
- if (dst[i] != i)
- abort();
- for (i = 32; i >= 0; i--)
- if (dst[len + i] != 0)
- abort();
+ lo_around[i] = memp[dst_off - i];
+ hi_around[i] = memp[dst_off + size - 1 + i];
+ }
+
+ memmove (memp + dst_off, memp + src_off, size);
+
+ /* Check that the destination area has the same
+ contents we wrote to the source area. */
+ for (i = 0; i < size; i++)
+ {
+ if (memp[dst_off + i] != rand_mem[i])
+ abort ();
+ }
+
+ /* Check that the area around the destination is not
+ clobbered. */
+ for (i = 1; i < space_around; i++)
+ {
+ if (memp[dst_off - i] != lo_around[i])
+ abort ();
+ if (memp[dst_off + size - 1 + i] != hi_around[i])
+ abort ();
}
}
}
}
- exit (0);
+ puts ("Test succeeded.");
+
+ return 0;
}
projects / kopensolaris-gnu / glibc.git / blobdiff