swift
b4673a2d - [cxx-interop][IRGen] Emit type metadata accessors correctly

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1 year ago
[cxx-interop][IRGen] Emit type metadata accessors correctly This change makes sure we correctly emit IR for type metadata accessors for C++ reference types. This fixes linker errors when a type metadata of a C++ reference type is used in multiple object files that are later linked together, for instance, if a C++ reference type is conformed to different Swift protocols in different Swift source files: ``` duplicate symbol 'type metadata accessor for __C.SharedObject' in: main.o second.o ld: 1 duplicate symbols ``` rdar://129027705 (cherry picked from commit a5ce0dc81dfe64ed633735a7a881d48d5418a486)
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