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datatype t1 = T1 of t2
and t2 = T2
fun f x =
let
val T1 (y as T2) = x
in
y
end
(*
2011-08-30 katsu
This causes BUG at DatatypeCompilation due to a bug of InferTypes.
[BUG] 093_datatype.sml:7.3-7.3: variable not found:y(2)
raised at: ../staticanalysis/main/SAContext.sml:43.13-46.18
handled at: ../toplevel2/main/Top.sml:868.37
main/SimpleMain.sml:359.53
After type inference:
val f(0) : t1(t30[]) -> ERRORty = (*** ERRORty?? ***)
(fn x(1) : t1(t30[]) =>
let
val $T_b(4) : {} =
case (bind)
x(1) : t1(t30[])
:{t1(t30[])}
of
T1 $T_a(3) : t2(t31[]) as T2 =>
()
:{}
: {}
in
y(2) : ERRORty : {ERRORty} (*** y(2) is unbound ***)
end
:ERRORty)
*)
(*
2011-08-01 ohori
Fixed. This is a simple bug in varsInPat, and not due to something
related to ifGenterm.
*)
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