static int stack_dir; /* 1 or -1 once known. */
# define STACK_DIR stack_dir
-static void
-find_stack_direction (char **ptr)
+static int
+find_stack_direction (int *addr, int depth)
{
- auto char dummy; /* To get stack address. */
-
- if (*ptr == NULL)
- { /* Initial entry. */
- *ptr = ADDRESS_FUNCTION (dummy);
-
- find_stack_direction (ptr); /* Recurse once. */
- }
- else
- {
- /* Second entry. */
- if (ADDRESS_FUNCTION (dummy) > *ptr)
- stack_dir = 1; /* Stack grew upward. */
- else
- stack_dir = -1; /* Stack grew downward. */
- }
+ int dir, dummy = 0;
+ if (! addr)
+ addr = &dummy;
+ *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+ dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+ return dir + dummy;
}
# endif /* STACK_DIRECTION == 0 */
# if STACK_DIRECTION == 0
if (STACK_DIR == 0) /* Unknown growth direction. */
- {
- char *addr = NULL; /* Address of first `dummy', once known. */
- find_stack_direction (&addr);
- }
+ STACK_DIR = find_stack_direction (NULL, (size & 1) + 20);
# endif
/* Reclaim garbage, defined as all alloca'd storage that
# endif /* CRAY */
# endif /* no alloca */
-#endif /* not GCC version 3 */
+#endif /* not GCC 2 */