llvm-project

cc4ec6da - [C++20] [Modules] Diagnose redeclarations from different modules

[C++20] [Modules] Diagnose redeclarations from different modules [basic.link]/p10: > If two declarations of an entity are attached to different modules, > the program is ill-formed But we only implemented the check for ODR. In this patch, we tried to diagnose the redeclarations from different modules.