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

[rearnsha at gcc dot gnu.org]

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

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-11-11
     Ever confirmed|0                           |1

--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
current code has 

int
support_fpu_trap (int flag)
{
  return support_fpu_flag (flag);
}


In other words, it assumes that if there is a flag for noting that an exception
has occurred, then it is also possible to trap on that flag being changed. 
That's not a valid assumption for AArch64.