[Bug target/85378] New: -fsplit-stack is incompatible with -fcf-protection -mcet

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85378

            Bug ID: 85378
           Summary: -fsplit-stack is incompatible with -fcf-protection
                    -mcet
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: igor.v.tsimbalist at intel dot com
            Blocks: 81652
  Target Milestone: ---

-fsplit-stack requires gold linker, which doesn't support GNU property
required by Intel CET:

https://sourceware.org/bugzilla/show_bug.cgi?id=22914
https://sourceware.org/bugzilla/show_bug.cgi?id=22915

It should be an error to use -fsplit-stack with -fcf-protection -mcet.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81652
[Bug 81652] [meta-bug] -fcf-protection=full -mcet bugs