diff options
| -rw-r--r-- | share/txr/stdlib/compiler.tl | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/share/txr/stdlib/compiler.tl b/share/txr/stdlib/compiler.tl index 9cc0aa07..0f2ad9de 100644 --- a/share/txr/stdlib/compiler.tl +++ b/share/txr/stdlib/compiler.tl @@ -454,7 +454,7 @@ (defmeth compiler pop-closure-spy (me spy) (let ((top (pop me.closure-spies))) - (unless spy + (unless top (error "closure spy stack bug in compiler")) (unless (eq top spy) (error "closure spy stack balance problem in compiler")))) @@ -464,7 +464,7 @@ (defmeth compiler pop-access-spy (me spy) (let ((top (pop me.access-spies))) - (unless spy + (unless top (error "access spy stack bug in compiler")) (unless (eq top spy) (error "access spy stack balance problem in compiler")))) |