Merged from emacs@sv.gnu.org

Patches applied:

 * emacs@sv.gnu.org/emacs--devo--0--patch-371
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-372
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-373
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-374
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-375
   Merge from gnus--rel--5.10

 * emacs@sv.gnu.org/emacs--devo--0--patch-376
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-377
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-378
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-379
   Merge from erc--emacs--21

 * emacs@sv.gnu.org/emacs--devo--0--patch-380
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-381
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-382
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-383
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-384
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-385
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-386
   Update from erc--emacs--22

 * emacs@sv.gnu.org/emacs--devo--0--patch-387
   Fix ERC bug introduced in last patch

 * emacs@sv.gnu.org/emacs--devo--0--patch-388
   Update from erc--emacs--22

 * emacs@sv.gnu.org/emacs--devo--0--patch-389
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-390
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-391
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-392
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-393
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-394
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-395
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-396
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-397
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-398
   Merge from gnus--rel--5.10

 * emacs@sv.gnu.org/emacs--devo--0--patch-399
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-400
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-401
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-402
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-403
   Rcirc update from Ryan Yeske

 * emacs@sv.gnu.org/emacs--devo--0--patch-404
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-405
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-406
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-407
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-408
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-409
   Update from CVS

 * emacs@sv.gnu.org/emacs--devo--0--patch-410
   Merge from gnus--rel--5.10

 * emacs@sv.gnu.org/emacs--devo--0--patch-411
   Miscellaneous tq-related fixes.

 * emacs@sv.gnu.org/emacs--devo--0--patch-412
   Update from CVS

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-121
   Update from CVS

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-122
   Update from CVS

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-123
   Update from CVS

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-124
   Update from CVS

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-125
   Update from CVS

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-126
   Merge from emacs--devo--0

 * emacs@sv.gnu.org/gnus--rel--5.10--patch-127
   Update from CVS


git-archimport-id: lorentey@elte.hu--2004/emacs--multi-tty--0--patch-581

1 files changed, 22 insertions, 0 deletions

diff --git a/src/w32.c b/src/w32.c
index c093eab599e..0da908ff932 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -323,6 +323,28 @@ w32_strerror (int error_no)
   return buf;
 }
 
+/* Return 1 if P is a valid pointer to an object of size SIZE.  Return
+   0 if P is NOT a valid pointer.  Return -1 if we cannot validate P.
+
+   This is called from alloc.c:valid_pointer_p.  */
+int
+w32_valid_pointer_p (void *p, int size)
+{
+  SIZE_T done;
+  HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ());
+
+  if (h)
+    {
+      unsigned char *buf = alloca (size);
+      int retval = ReadProcessMemory (h, p, buf, size, &done);
+
+      CloseHandle (h);
+      return retval;
+    }
+  else
+    return -1;
+}
+
 static char startup_dir[MAXPATHLEN];
 
 /* Get the current working directory.  */