gdb_assert (object == TARGET_OBJECT_WCOOKIE);
gdb_assert (readbuf && writebuf == NULL);
- if (offset >= sizeof (unsigned long))
+ if (offset == sizeof (unsigned long))
+ return 0; /* Signal EOF. */
+ if (offset > sizeof (unsigned long))
return -1;
#ifdef PT_WCOOKIE
/* If PT_WCOOKIE is defined (by <sys/ptrace.h>), assume we're
running on an OpenBSD release that uses StackGhost (3.1 or
- later). As of release 3.4, OpenBSD doesn't use a randomized
- cookie yet, but a future release probably will. */
+ later). Since release 3.6, OpenBSD uses a fully randomized
+ cookie. */
{
int pid;