[Bug libfortran/78314] New: [aarch64] ieee_support_halting does not report unsupported fpu traps correctly

[nsz at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78314

            Bug ID: 78314
           Summary: [aarch64] ieee_support_halting does not report
                    unsupported fpu traps correctly
           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 trapping fpu exceptions are optional, but
ieee_support_halting(except_flag) does not report this
correctly, so fortran tests that depend on trap bit
changes would fail:

Program aborted. Backtrace:
#0  0x20000472D3
FAIL: gfortran.dg/ieee/ieee_6.f90   -Os  execution test