[Bug libfortran/78449] New: compile time ieee_support_halting is not correct on arm and aarch64 ( FAIL: gfortran.dg/ieee/ieee_8.f90 -Os execution test )

[nsz at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78449

            Bug ID: 78449
           Summary: compile time ieee_support_halting is not correct on
                    arm and aarch64 ( FAIL: gfortran.dg/ieee/ieee_8.f90
                    -Os  execution test )
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libfortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nsz at gcc dot gnu.org
  Target Milestone: ---

on aarch64 and arm trapping support requires runtime check (bug 78314),
but it seems fortran may need consistent result for ieee_support_halting
at compile time and runtime (in which case the correct behaviour is
to always return false on targets where there might be no support).