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fixes #4124

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This commit is contained in:
Andreas Rumpf
2016-04-29 20:56:30 +02:00
parent b48e178969
commit c870e831c8
2 changed files with 33 additions and 3 deletions
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11
compiler/semstmts.nim
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@@ -778,11 +778,16 @@ proc typeSectionFinalPass(c: PContext, n: PNode) =
var s = a.sons[0].sym
# compute the type's size and check for illegal recursions:
if a.sons[1].kind == nkEmpty:
if a.sons[2].kind in {nkSym, nkIdent, nkAccQuoted}:
var x = a[2]
while x.kind in {nkStmtList, nkStmtListExpr} and x.len > 0:
x = x.lastSon
if x.kind notin {nkObjectTy, nkDistinctTy, nkEnumTy, nkEmpty}:
# type aliases are hard:
#MessageOut('for type ' + typeToString(s.typ));
var t = semTypeNode(c, a.sons[2], nil)
if t.kind in {tyObject, tyEnum}:
var t = semTypeNode(c, x, nil)
assert t != nil
if t.kind in {tyObject, tyEnum, tyDistinct}:
assert s.typ != nil
assignType(s.typ, t)
s.typ.id = t.id # same id
checkConstructedType(s.info, s.typ)