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fixes #12224 (#12225)

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* fixes #12224

* improve test
This commit is contained in:
cooldome 2019-09-21 05:45:27 +01:00 • committed by Andreas Rumpf
commit be82d11576
3 changed files with 31 additions and 5 deletions
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8
compiler/parampatterns.nim
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@ -218,14 +218,16 @@ proc isAssignable*(owner: PSym, n: PNode; isUnsafeAddr=false): TAssignableResult
of nkSym:
let kinds = if isUnsafeAddr: {skVar, skResult, skTemp, skParam, skLet, skForVar}
else: {skVar, skResult, skTemp}
if n.sym.kind in kinds:
if n.sym.kind == skParam and n.sym.typ.kind in {tyVar, tySink}:
result = arLValue
elif isUnsafeAddr and n.sym.kind == skParam:
result = arLValue
elif n.sym.kind in kinds:
if owner != nil and owner == n.sym.owner and
sfGlobal notin n.sym.flags:
result = arLocalLValue
else:
result = arLValue
elif n.sym.kind == skParam and n.sym.typ.kind in {tyVar, tySink}:
result = arLValue
elif n.sym.kind == skType:
let t = n.sym.typ.skipTypes({tyTypeDesc})
if t.kind == tyVar: result = arStrange