Why line declared 'containing no code' in gcov

Question

I am trying to analyze code coverage in c++ program using gcov. An output line I got is:

//my_header.h.gcov
-:  349:    TArray<unsigned,1,8> my_var; 

According to gcov documentation it means that 'line 349 contains no code'.

As one can clearly see, this line contains code, namely a declaration. I would really like to understand what happpens there.

Answer 1

Declarations are really just information for the compiler, and no executable code is generated. Therefore, there's nothing in this file to determine coverage for.