https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105404
David Binderman <dcb314 at hotmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mliska at suse dot cz --- Comment #4 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Jonathan Wakely from comment #3) > No, because we don't use the buggy Z_FIXED feature. Righto. Presumably the upgrade can be postponed until after the current version of gcc trunk is released. I note with interest that there is a lot of old K'n'R style code in the zlib library which clang warns won't compile with c2x. It might be worth adding an extra filter to file contrib/filter-clang-warnings.py to remove such warnings. Pattern /zlib/.*-Wdeprecated-non-prototype would probably work.