Compile the following file: ``` #include <ranges> int main() {} ``` using: $ clang++ -std=c++2a file.cpp You will get an error: /usr/lib/gcc/x86_64-redhat-linux/11/../../../../include/c++/11/ranges:3466:19: error: missing 'typename' prior to dependent type name 'iterator_traits<iterator_t<_Base>>::iterator_category' using _Cat = iterator_traits<iterator_t<_Base>>::iterator_category; This renders clang unusable for any code that includes ranges and compiles with c++20 flags because clang hasn't implemented P0634R3. The very simple fix is to add Fedora-speciffic patch which simply adds the typename into libstdc++.
(In reply to Marián Konček from comment #0) > The very simple fix is to add Fedora-speciffic patch which simply adds the > typename into libstdc++. No, because Fedora's policy is upstream first (and it's already fixed upstream).
*** Bug 1981085 has been marked as a duplicate of this bug. ***
The patch is now upstream, so a refresh of the Fedora package will bring it in.
FEDORA-2021-32bc696c85 has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2021-32bc696c85
FEDORA-2021-32bc696c85 has been pushed to the Fedora 34 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-32bc696c85` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-32bc696c85 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-32bc696c85 has been pushed to the Fedora 34 stable repository. If problem still persists, please make note of it in this bug report.