llvm-project

fe78a9a7 - [NFC] [clangd] [C++20 Modules] Add a warning if clangd detected multiple

[NFC] [clangd] [C++20 Modules] Add a warning if clangd detected multiple source declares the same module Now clangd assumes no duplicated module declared by different source file in a sinlge project. But in practice, it may not be the case. Although we can't fix it now, emitting a warning is helpful for users to understand what's going on.