On Thu, Jan 03, 2019 at 12:31:50PM -0800, Tom Stellard wrote: > On 01/03/2019 12:28 PM, Carlos O'Donell wrote: > > On 1/3/19 2:49 PM, Michael Cronenworth wrote: > >> Part of Fedora's default C/CXX flags include -fstack-clash-protection > >> but clang does not support this flag and has until a few weeks ago[1] > >> silently ignored the flag. > >> > >> What are clang apps who use Fedora's default flags supposed to do? > >> Are there clang default flag macros? > >> > >> Thanks, Michael > >> > >> [1] https://bugzilla.redhat.com/show_bug.cgi?id=1658311 > > > > You should reach out to Tom or Serge for comments :-) > > > > The recommended solution for now is to filter out flags that clang does > not support. > > See for example: https://src.fedoraproject.org/rpms/libcxx/blob/master/f/libcxx.spec#_60 > If the goal is to harden the binary without much performance overhead, clang also proposes some unique flags, maybe it is worth considering them? https://clang.llvm.org/docs/SafeStack.html looks like a decent choice. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
