Same found in my project, we have @attached(member, names: arbitrary) public macro MacroName<each U: ProtocolName>(_ name: repeat (each U).Type) = #externalMacro(module: "MacroModule", type: "MacroType") and calling it @MacroName(ImplementationOfProtocol) struct Something { ...... } class ImplementationOfProtocol: ProtocolName {} Seeing error "Expected member name or initializer call after type name"

Is it possible iOS 26 brought back this issue? Our telemetry indicates several user experienced the issue. Only one user on iOS 18.6.2 were able to recover just 1 second after the first failure, all the rest of users on 26.0/26.0.1 were not able to recover within a minute.

@DTS Engineer New post created, thank you for your attention.