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fixes #7854

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Araq 2018-08-29 15:46:50 +02:00
commit e98e214422
2 changed files with 38 additions and 1 deletions
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3
compiler/sigmatch.nim
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@ -1921,6 +1921,7 @@ proc paramTypesMatchAux(m: var TCandidate, f, a: PType,
result.typ.n = arg
return
let oldInheritancePenalty = m.inheritancePenalty
var r = typeRel(m, f, a)
# This special typing rule for macros and templates is not documented
@ -2002,7 +2003,7 @@ proc paramTypesMatchAux(m: var TCandidate, f, a: PType,
if arg.typ == nil:
result = arg
elif skipTypes(arg.typ, abstractVar-{tyTypeDesc}).kind == tyTuple or
m.inheritancePenalty > 0:
m.inheritancePenalty > oldInheritancePenalty:
result = implicitConv(nkHiddenSubConv, f, arg, m, c)
elif arg.typ.isEmptyContainer:
result = arg.copyTree