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fix(cxx): Use temporary variables when unpacking tuples #165

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Aug 6, 2021
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3 changes: 2 additions & 1 deletion src/Jikka/CPlusPlus/Convert/UnpackTuples.hs
Original file line number Diff line number Diff line change
Expand Up @@ -175,7 +175,8 @@ runStatement stmt cont = case stmt of
if shouldBeArray ts
then map (\i -> Call At [e, litInt32 i]) [0 .. n - 1]
else map (\i -> Call (StdGet i) [e]) [0 .. n - 1]
return $ zipWith (\y e -> Assign (AssignExpr SimpleAssign (LeftVar y) e)) (map snd ys) es
tmpys <- replicateM (length ts) (newFreshName LocalNameKind)
return $ zipWith3 (\t y e -> Declare t y (DeclareCopy e)) ts tmpys es ++ zipWith (\y e -> Assign (AssignExpr SimpleAssign (LeftVar y) (Var e))) (map snd ys) tmpys
Nothing -> return [Assign (AssignExpr SimpleAssign (LeftVar x) e)]
_ -> do
forM_ (S.toList (freeVarsAssignExpr e)) $ \x -> do
Expand Down