[llvm-dev] [libcxx-dev] Removing deprecated <ext/hash_set>, <ext/hash_map> and <ext/__hash> (original) (raw)

Louis Dionne via llvm-dev llvm-dev at lists.llvm.org
Tue Feb 5 05:28:32 PST 2019

On Feb 5, 2019, at 01:53, Dimitry Andric <dimitry at andric.com> wrote:

Well, it would be interesting to do a FreeBSD ports exp-run with these headers removed. You'd be surprised how much software is out there using obsolete, experimental and/or not even officially existing headers. :-)

Please do so and report on the results. One solution might be to ship those headers outside of libc++ for projects that still need them.

Louis

-Dimitry

On 4 Feb 2019, at 20:31, Louis Dionne via libcxx-dev <libcxx-dev at lists.llvm.org <mailto:libcxx-dev at lists.llvm.org>> wrote:

Hi, _Libc++ has been shipping the <ext/hashset>, <ext/hashmap> and <ext/_hash> headers for a while and they are deprecated. Those headers contain data structures like gnucxx::hashmap that have replacements like std::unorderedmap. I would like to remove those headers. I've put up a patch for review but I won't commit it until we have a sort of plan because I know some people have expressed feelings about removing the headers in the past: https://reviews.llvm.org/D57688 <https://reviews.llvm.org/D57688>. FWIW, I've compiled a large code base with that patch and I didn't get any trouble. I suspect the amount of breakage this will cause is manageable especially if we give advance notice, but others might disagree. Is anybody opposed to removing those headers? If you're opposed to the removal, please explain why and what removal timeline/plan would work for you. Thanks! Louis

libcxx-dev mailing list libcxx-dev at lists.llvm.org <mailto:libcxx-dev at lists.llvm.org> https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev

-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20190205/695de81c/attachment-0001.html>

More information about the llvm-dev mailing list