redhat-rpm-config-267-1.fc40 activates the first phase of compiler flags to avoid regressions in the Fedora C99 port. Implicit ints and implicit function declarations will be rejected by default. The recommended way to opt out is to set %build_type_safety_c to 0. See the buildflags.md documentation. I tried very hard to bring the number of build failures to 0, but in the end, every time I got close, some other package popped up that failed to build. So I have now made the switch in the knowledge that some packages will still fail to build. The discussion regarding this topic at the GNU Tools Cauldron last weekend was quite positive, and it is likely that GCC 14 will make a similar change by default. Thanks, Florian _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue