https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67097
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> --- (In reply to Gilles Gouaillardet from comment #6) > as a side note, would you be interested in me providing a patch so > gcov-tool merge > can merge n directories (currently, we are limited to n=2) ? > > i would implement that via a binary tree, so under the hood, that would > require o(log(n)) elementary merge of two directories. > > for extreme merge, i can also add an option that specifies the temporary > directory to be used (e.g. something different that /tmp/$TMPDIR) If you have a use-case where it would be beneficial, why not ;)