AST: Get SPI status of PatternBindingDecl from anchoring VarDecl #67811
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For property declarations, the
@_spi
attribute is attached to the VarDecl AST node, rather than the PatternBindingDecl AST node, so theisSPI()
query should take this into account. Failing to do so caused the availability checker to erroneously require that@_spi
properties of types in-library-level api
libraries have availability annotations.Resolves rdar://113587321.