[5.3] SILCombine: fix an assertion crash in SILCombine when casting AnyClass to Any #33785
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…s to Any This caused a problem when propagating the concrete type of an existential: if the concrete type is itself an opened existential, it was not added to the OpenedArchetypeTracker. https://bugs.swift.org/browse/SR-13444 rdar://problem/68077098
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airspeedswift
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Sep 3, 2020
AnthonyLatsis
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swift 5.3
🍒 release cherry pick
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This caused a problem when propagating the concrete type of an existential: if the concrete type is itself an opened existential, it was not added to the OpenedArchetypeTracker.
Original: #33742
Radar: rdar://problem/68077098
Jira: https://bugs.swift.org/browse/SR-13444
Explanation: This fixes a compiler crash. There are actually two separate fixes, both related to the same problem: propagating a concrete type of an existential.
Scope: This bug is in the compiler for a while. The problem can show up when casting from AnyClass to Any.
Risk: Low. Both fixes are pretty simple.
Reviewer: @atrick