Propagate Pattern Arena When Allocating PackExpansionTypes #40808
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This may be the cause of the instability we've been seeing on the bots here. If a type variable is used as the pattern type across allocation arenas, we may incorrectly reuse a cache entry and it could be substituted a second time for a bogus type. rdar://87413287
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@swift-ci smoke test and merge |
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@swift-ci smoke test macOS |
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Merging to unblock CI. |
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This may be the cause of the instability we've been seeing on the bots
here. If a type variable is used as the pattern type across allocation
arenas, we may incorrectly reuse a cache entry and it could be
substituted a second time for a bogus type.
rdar://87413287