[Bug fortran/91828] gcc/fortran/check.c requires mpfr_set_z_2exp from MPFR 3.0.0, unavailable in mpfr-2.4.2

[jb at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91828

Janne Blomqvist <jb at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
                URL|                            |https://gcc.gnu.org/ml/gcc-
                   |                            |patches/2019-11/msg00676.ht
                   |                            |ml
   Last reconfirmed|                            |2019-11-09
           Assignee|unassigned at gcc dot gnu.org      |jb at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #5 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Assigning to myself, patch at
https://gcc.gnu.org/ml/gcc-patches/2019-11/msg00676.html