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fixes #3550

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Araq 2015-11-18 12:32:46 +01:00
commit 698b1fc954
2 changed files with 7 additions and 2 deletions
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7
compiler/cgmeth.nim
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@ -18,7 +18,12 @@ proc genConv(n: PNode, d: PType, downcast: bool): PNode =
var source = skipTypes(n.typ, abstractPtrs)
if (source.kind == tyObject) and (dest.kind == tyObject):
var diff = inheritanceDiff(dest, source)
if diff == high(int): internalError(n.info, "cgmeth.genConv")
if diff == high(int):
# see bug #3550 which triggers it. XXX This is a hack but I don't know yet
# how the real fix looks like:
localError(n.info, "there is no subtype relation between " &
typeToString(d) & " and " & typeToString(n.typ))
#internalError(n.info, "cgmeth.genConv")
if diff < 0:
result = newNodeIT(nkObjUpConv, n.info, d)
addSon(result, n)