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-rw-r--r--src/alloc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/alloc.c b/src/alloc.c
index ac3de83b2b6..2d785d5b9a4 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1553,7 +1553,7 @@ make_interval (void)
/* Mark Lisp objects in interval I. */
static void
-mark_interval (register INTERVAL i, Lisp_Object dummy)
+mark_interval (INTERVAL i, void *dummy)
{
/* Intervals should never be shared. So, if extra internal checking is
enabled, GC aborts if it seems to have visited an interval twice. */
@@ -1567,7 +1567,7 @@ mark_interval (register INTERVAL i, Lisp_Object dummy)
#define MARK_INTERVAL_TREE(i) \
do { \
if (i && !i->gcmarkbit) \
- traverse_intervals_noorder (i, mark_interval, Qnil); \
+ traverse_intervals_noorder (i, mark_interval, NULL); \
} while (0)
/***********************************************************************