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revert #12100; typeof(nil) is weird enough, don't allow it as the return type

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This commit is contained in:
Andreas Rumpf 2019-09-02 17:48:06 +02:00
commit 5a03eea518
2 changed files with 1 additions and 4 deletions
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2
compiler/types.nim
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@ -1310,7 +1310,7 @@ proc typeAllowedAux(marker: var IntSet, typ: PType, kind: TSymKind,
tyNone, tyForward, tyFromExpr:
result = t
of tyNil:
if kind != skConst and kind != skParam and kind != skResult: result = t
if kind != skConst and kind != skParam: result = t
of tyString, tyBool, tyChar, tyEnum, tyInt..tyUInt64, tyCString, tyPointer:
result = nil
of tyOrdinal:

3
tests/ccgbugs/tnil_type.nim
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@ -13,6 +13,3 @@ f3(typeof(nil))
proc f4[T](_: T) = discard
f4(nil)
proc f5(): typeof(nil) = nil
discard f5()