lcov how to cover static initialization and destruction function

Question

In this page: https://servernl1.sveena.com/lcov3987/c/s/c/port/lin/lindow.cpp.func-sort-c.html there is this function __static_initialization_and_destruction_0(int, int) that is not covered.
What is this function? It is not in the source. How do I cover it or exclude it?

Answer 1

For each translation unit that has a static global object which has to be constructed, gcc will generate a __static_initialization_and_destruction_0 function. The language mandates that all global objects are initialized before the first call to a function in the same translation unit.

Technically, I would assume that it is reached once you call a function from that translation unit, but maybe the coverage instrumentation does not generate code for it.

As it is an compiler-internal function, I would recommend to ignore it. I am not aware that lcov allows to define exclusions for indiviual functions.