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Emit proper error message when typing ={pvar} in a single sided context #1013

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Emit proper error message when typing ={pvar} in a single sided context #1013

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4 changes: 3 additions & 1 deletion src/ecTyping.ml
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Original file line number Diff line number Diff line change
Expand Up @@ -3241,7 +3241,9 @@ and trans_form_or_pattern env mode ?mv ?ps ue pf tt =

let do1 = function
| GVvar x ->
let ml, mr = oget (EcEnv.Memory.get_active_ts env) in
let ml, mr = match (EcEnv.Memory.get_active_ts env) with
| Some (ml, mr) -> ml, mr
| None -> tyerror f.pl_loc env (UnexpectedGoalShape GSE_ExpectedTwoSided) in
let x1 = lookup ml (qual (om |> omap fst) x) in
let x2 = lookup mr (qual (om |> omap snd) x) in
unify_or_fail env ue x.pl_loc ~expct:x1.f_ty x2.f_ty;
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