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fix #33227, lowering of empty goto loop at top level #33230

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Merged
merged 1 commit into from
Sep 12, 2019
Merged

fix #33227, lowering of empty goto loop at top level #33230

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2 changes: 2 additions & 0 deletions src/jlfrontend.scm
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,8 @@
file line)))
(if (and (null? (cdadr (caddr th)))
(and (length= (lam:body th) 2)
;; 1-element body might be `return` or `goto` (issue #33227)
(return? (cadr (lam:body th)))
(let ((retval (cadadr (lam:body th))))
(or (and (pair? retval) (eq? (car retval) 'lambda))
(simple-atom? retval)))))
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2 changes: 2 additions & 0 deletions test/syntax.jl
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Expand Up @@ -1940,3 +1940,5 @@ function f33135(x::T) where {C1, T}
end
@test f33135(0) == 1

# issue #33227
@test Meta.isexpr(Meta.lower(Main, :((@label a; @goto a))), :thunk)