swift

eeb62b05 - [SILGen] Create thunks for non-throwing -> indirect error result conversions

[SILGen] Create thunks for non-throwing -> indirect error result conversions When a non-throwing function is passed to a function that expects a throwing function with an indirect error result, we need to create a thunk because the indirect error result pointer is passed as an extra trailing parameter. Extra trailing parameters except for `swifterror` and `swiftself` are not allowed on some platforms like WebAssembly, so they need to be called as exactly the same function signature. ```swift func passThrough<X>(_ c: () throws(X) -> Void) throws(X) { try c() } func neverThrow() {} passThrough(neverThrow) ```