https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82702
--- Comment #4 from Marco Castelluccio <mcastelluccio at mozilla dot com> --- I suppose this is a regression caused by https://github.com/gcc-mirror/gcc/commit/41da7513d5aaaff3a5651b40edeccc1e32ea785a. Is it intentional? Note that generating multiple files makes parsing slower, as lcov (or similar tools) will need to 1) list the files generated; 2) open and parse them one by one.
