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-rw-r--r--lisp/emacs-lisp/byte-opt.el7
1 files changed, 7 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/byte-opt.el b/lisp/emacs-lisp/byte-opt.el
index 90ab8911c39..38bf1121e8a 100644
--- a/lisp/emacs-lisp/byte-opt.el
+++ b/lisp/emacs-lisp/byte-opt.el
@@ -480,6 +480,13 @@
backwards)))))
(cons fn (mapcar 'byte-optimize-form (cdr form)))))
+ ((eq fn 'while)
+ (unless (consp (cdr form))
+ (byte-compile-warn "too few arguments for `while'"))
+ (cons fn
+ (cons (byte-optimize-form (cadr form) nil)
+ (byte-optimize-body (cddr form) t))))
+
((eq fn 'interactive)
(byte-compile-warn "misplaced interactive spec: `%s'"
(prin1-to-string form))