[Bug gas/31284] New: scfi: untraceable control flow should be a hard error

[indu.bhagat at oracle dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31284

            Bug ID: 31284
           Summary: scfi: untraceable control flow should be a hard error
           Product: binutils
           Version: 2.43 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: indu.bhagat at oracle dot com
  Target Milestone: ---

Currently, if an indirect jump is seen, GCFG (a CFG of ginsns) cannot be
created. GCFG creation is necessary for SCFI (invoked via --scfi=experimental
on hand-written asm) passes.  In this case, the SCFI machinery currently bails
out with a warning:

      "Untraceable control flow for func 'foo'; Skipping SCFI"

It is, however, better suited if this is a hard error.  Change it to a hard
error.

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