Using SonarQube version 8.9.1
There is this rule called cpp:PPIncludeNotAtTop which appears to be listed here Rules explorer
This rule appears to be missing an exception for blocks like extern "C"
extern "C" {
#include "some_h_file.h
}
Which means this code smell is triggered by the construction itself where C++ files contain include directives that a are placed inside an extern "C" block. I guess the same goes for the corresponding extern "C++" in C code.
I’m pretty sure this construct is needed for my case, because we link with object files that are compiled from C code by a C compiler.
I guess on a theoretical basis, we could possibly compile the C code with the C++ compiler if these files are written using only parts of C that also are valid C++. However, in general, C is not a subset of C++, therefore there will be cases where this is not possible.
I hope this use case is considered as important enough to either change the existing rule, add a configuration or a separate rule for.