https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48361
--- Comment #18 from Prasannanjaneyulu <p.padavala at camlintechnologies dot com> --- Thank you @martin. I am not sure whether ubuntu 16.04 is compatible with gcc 8.4.0. Our app. is currently built for ubuntu 16.04 and I don't know what breaking changes it could bring if we upgrade gcc. Do you know any workaround other than disabling the whole branch coverage?