Prevent GC threshold from exceeding fixnum limit during precision scrolling

* lisp/pixel-scroll.el (pixel-scroll-start-momentum): Prevent GC
threshold from exceeding most-positive-fixnum.

diff --git a/lisp/pixel-scroll.el b/lisp/pixel-scroll.el
index aefe3c12dc22d074db04ec8e5dd0594da116d6ba..6dba733b9c4dce8a33f5d49bea86eedf73396989 100644 (file)
--- a/lisp/pixel-scroll.el
+++ b/lisp/pixel-scroll.el
@@ -761,7 +761,8 @@ It is a vector of the form [ VELOCITY TIME SIGN ]."
     (let ((window (mwheel-event-window event))
           ;; The animations are smoother if the GC threshold is
           ;; reduced for the duration of the animation.
-          (gc-cons-threshold (* gc-cons-threshold 3))
+          (gc-cons-threshold (min most-positive-fixnum
+                                  (* gc-cons-threshold 3)))
           (state nil))
       (when (framep window)
         (setq window (frame-selected-window window)))