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fixes #7601, array construction of ptr generics (#7671)

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* fixes #7601, array construction of ptr generics

* add more test
This commit is contained in:
andri lim 2018-04-28 02:38:15 +07:00 • committed by Andreas Rumpf
commit 07d6ff4be4
3 changed files with 71 additions and 2 deletions
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compiler/sem.nim
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@ -153,8 +153,9 @@ proc commonType*(x, y: PType): PType =
if a.kind in {tyRef, tyPtr}:
k = a.kind
if b.kind != a.kind: return x
a = a.lastSon
b = b.lastSon
# bug #7601, array construction of ptr generic
a = a.lastSon.skipTypes({tyGenericInst})
b = b.lastSon.skipTypes({tyGenericInst})
if a.kind == tyObject and b.kind == tyObject:
result = commonSuperclass(a, b)
# this will trigger an error later: