* alloc.c (mark_memory): Conditionalize recent fix on USE_USB_TAG.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 21c4db4ddca..a3e8033db18 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4312,12 +4312,14 @@ mark_memory (void *start, void *end)
         void *w = *(void **) ((char *) pp + i);
         mark_maybe_pointer (w);
 
+#ifdef USE_LSB_TAG
         /* A host where a Lisp_Object is wider than a pointer might
            allocate a Lisp_Object in non-adjacent halves.  If
            USE_LSB_TAG, the bottom half is not a valid pointer, so
            widen it to to a Lisp_Object and check it that way.  */
         if (sizeof w < sizeof (Lisp_Object))
           mark_maybe_object (widen_to_Lisp_Object (w));
+#endif
       }
 }