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-rw-r--r--share/txr/stdlib/compiler.tl1
1 files changed, 1 insertions, 0 deletions
diff --git a/share/txr/stdlib/compiler.tl b/share/txr/stdlib/compiler.tl
index d77c4cd1..6a778ed7 100644
--- a/share/txr/stdlib/compiler.tl
+++ b/share/txr/stdlib/compiler.tl
@@ -122,6 +122,7 @@
(defmeth compiler get-dreg (me atom)
(condlet
+ ((((null atom))) '(t 0))
(((dreg [me.dreg atom])) dreg)
((((< me.dreg-cntr 256)))
(let* ((dreg ^(d ,(pinc me.dreg-cntr))))