# EXC\_BAD\_ACCESS using withTaskGroup depending on size of data

**URL:** <https://forums.swift.org/t/exc-bad-access-using-withtaskgroup-depending-on-size-of-data/54506>\
**Category:** Using Swift\
**Tags:** asyncawait\
**Created:** [January 7, 2022, 8:36pm UTC](https://forums.swift.org/t/exc-bad-access-using-withtaskgroup-depending-on-size-of-data/54506 "2022-01-07T20:36:33Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![sspringer](https://avatars.discourse-cdn.com/v4/letter/s/e9c0ed/32.png) [@sspringer](https://forums.swift.org/u/sspringer)\
**Post date:** [January 11, 2022, 12:24pm UTC](https://forums.swift.org/t/exc-bad-access-using-withtaskgroup-depending-on-size-of-data/54506/21 "2022-01-11T12:24:04Z")

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> [@t089](#):
>
> Search is your friend: [Remove isUniquelyReferenced or isUniquelyReferencedNonObjC](https://forums.swift.org/t/remove-isuniquelyreferenced-or-isuniquelyreferencednonobjc/398)

Well, I also found [https://www.mail-archive.com/swift-evolution@swift.org/msg14789.html](https://www.mail-archive.com/swift-evolution@swift.org/msg14789.html) but still do not know what to use. Maybe more search...

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