On Thu, 2020-08-13 at 11:13 -0400, Omair Majid wrote: > Jeff Law <law@xxxxxxxxxx> writes: > > > I can't help with the untagging, but I'm here if there's anything > > going wrong with the system tools that is ultimately affecting dotnet. > > Thanks. > > Just for context: > > .NET Core uses a bundled (and modified) copy of libunwind for unwinding > the stack. This version doesn't work on aarch64 when built with one of > the new CFLAGS introduced in Fedora 33/34: -mbranch-protection=standard. > > The upstream version of libunwind (the Fedora libunwind package) is also > broken (in a completely different way) for aarch64 from a .NET Core > point of view too. > > For now, my "fix" is to remove `-mbranch-protection=standard` from > CFLAGS on aarch64 to get things working. That may work in the immediate term, but I think we'll need a better fix in the long term -- I believe the plan is to have the BTI/PAC stuff enabled by default for RHEL 9. We can bug ARM to get upstream libunwind fixed if that would help (we meet with them Monday -- you'd be welcome to join to provide technical context to the libunwind issue). JEff > _______________________________________________ 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
