[Property Wrappers] Fix a few corner cases where property wrappers with nonmutating setters fail in DI #35218
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the setter type before attempting to emit a load in the case where the setter is nonmutating and must capture self by value.
is in an init or if the wrapped var is a local variable.
in adjustSelfTypeForMember in CSApply.
LifetimeChecker::shouldEmitError in order to avoid incorrectly populating EmittedErrorLocs when no error is emitted. This fixes a few corner cases where DI would error out or crash while assigning to a wrapped property with a nonmutating setter.
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@swift-ci please test source compatibility release |
slavapestov
approved these changes
Jan 8, 2021
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assign_by_wrapperinstruction, substitute generic arguments in the setter type before emitting code to capture the base object. Otherwise, the setter would be incorrectly applied to the address ofselfinstead of loading the value ifselfis a generic type and the setter isnonmutating.LifetimeChecker::shouldEmitErrorin order to avoid incorrectly recording a non-erroneous location as erroneous.These changes correct a compiler crash that occurred when a generic type has a property wrapper with a nonmutating setter that is re-assigned in the initializer, e.g.
This also allows out-of-line initialization via wrapped value when a struct contains a reference type property wrapper.
Resolves: rdar://67445345
Resolves: rdar://66561517