Tweak mark_object to avoid a conditional branch

* src/alloc.c (LAST_MARKED_SIZE): Now an enum.  Make it a power of 2.
(mark_object): Take advantage of the power of 2.

1 files changed, 1 insertions, 1 deletions

diff --git a/etc/DEBUG b/etc/DEBUG
index c4774b06d38..a7792952089 100644
--- a/etc/DEBUG
+++ b/etc/DEBUG
@@ -814,7 +814,7 @@ the machine where you started GDB and use the debugger from there.
 ** Debugging problems which happen in GC
 
 The array 'last_marked' (defined on alloc.c) can be used to display up
-to 500 last objects marked by the garbage collection process.
+to the 512 most-recent objects marked by the garbage collection process.
 Whenever the garbage collector marks a Lisp object, it records the
 pointer to that object in the 'last_marked' array, which is maintained
 as a circular buffer.  The variable 'last_marked_index' holds the