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-rw-r--r--lisp/emacs-lisp/comp.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index f94544877ed..9fe614f9e94 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -2296,7 +2296,7 @@ processes from `comp-async-compilations'"
do (remhash file-name comp-async-compilations))
(hash-table-count comp-async-compilations))
-(defvar comp-num-cpus)
+(defvar comp-num-cpus nil)
(defun comp-effective-async-max-jobs ()
"Compute the effective number of async jobs."
(if (zerop comp-async-jobs-number)