fix potential race in PackageCollections.refreshCollections #3233
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motivation: CI crashes in PackageCollectsTest::testBrokenRefresh suggest a race condition in the code changes: * change ThreadSafeArrayStore::apend to return the current count in a thread safe manner * update the callsite to use the count returned from append instead of after the append -- which could be racy rdar://73884751
tomerd
requested review from
abertelrud,
friedbunny and
neonichu
as code owners
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this is the 5.4 version of #3232 |
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@swift-ci please test |
neonichu
approved these changes
Feb 2, 2021
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motivation: CI crashes in PackageCollectsTest::testBrokenRefresh suggest a race condition in the code
changes:
rdar://73884751