On Tue, Apr 04, 2023 at 11:02:53AM +0200, Florian Weimer wrote: > * Zbigniew Jędrzejewski-Szmek: > > > And -Ofast is not something that can be enabled as a default build flag, > > because it leads to surprising and unpredictable behaviour in some > > cases. (*) > > I assume (*) refers to the the strange-action-at-distance issue. It was > recently fixed in GCC: > > --funsafe-math-optimizations is unexpectedly harmful, especially w/ -shared > <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522>
I had something different in mind: -Ofast implies -ffast-math which implies -ffinite-math-only, i.e. no NaNs or Infs in floating point calculations (and other effects). https://simonbyrne.github.io/notes/fastmath/ Zbyszek _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org 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@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
