Description Yoann Le Montagner 2022-02-10 09:00:48 EST

Created attachment 288024 [details]
Reproducer sources + screenshot

The C++ index fails to resolve some symbols in a project containing the 3 files:
- wrapper_main.cpp
- wrapper.cpp
- wrapper.h
(see the attached zip file and the embedded screenshot)

It was hard to isolate a minimal reproducer, and it seems that all the remaining elements in the project matter. In particular:
- I don't have any problem if file `wrapper_main.cpp` is named differently,
- I don't have any problem if files `wrapper.{h,cpp}` are removed and `#include "wrapper.h"` is also removed in `wrapper_main.cpp`,
- I don't have any problem if all the boost stuff is removed from `wrapper_main.cpp`, keeping only:
```
#include <optional>
void my_fun_with_optional() {
	std::optional<int> n = std::make_optional(42);
}
```

Full workflow for project creation:
1) File > New > C/C++ project
2) Select C++ Managed build
3) Give a name + select Project type = Executable/Empty project with toolchain Linux GCC
4) Finish
5) In project properties > C/C++ Build > Settings > Tool settings > GCC C++ Compiler/Dialect, select Language standard = ISO C++17
6) Apply and close
7) Import the 3 source files mentioned above at project root.
8) Rebuild indexer if necessary
9) => Errors shown in file `wrapper_main.cpp`.