[cfe-dev] ClangD - Add option to not Drop diagnostics outside the main file?

[Dan Walmsley via cfe-dev]

Hi,

  Im integrating clangd into an open source IDE (we used to use libclang)

Any how if I have:

main.cpp and it includes header1.h

and header1.h includes header2.h

and header2.h is missing.

I start to get diagnostics saying x type is not defined (even though it is, because once the missing file is hit, the analysis stops)

I noticed at this line:
https://github.com/llvm-mirror/clang-tools-extra/blame/86961faaaf0b56b1c5dac2ed979987879cbc5294/clangd/Diagnostics.cpp#L376


The diagnostic from the missing file is dropped. If I had the option to receive diagnostics from outside the main file, this would be really useful for this scenario.

The user could then see immediately that there was a diagnostic in header1.h and fix it.

Thanks in advance for any advice on this matter.

Dan
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