[Patch, fortran] PR87239 - ICE in deferred-length string

[Paul Richard Thomas]

This is sufficiently 'obvious'  that I have committed the patch to
trunk as revision 264409.

My inclination is to commit it to 8-branch as well since deferred
character bugs were one of the complaints in the fortran standards
survey. OK?

Paul

2018-09-18  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/87239
    * trans-expr.c (gfc_trans_assignment_1): The rse.pre for the
    assignment of deferred character elemental function results to
    a realocatable lhs must not be added to the exterior block but
    must go to the loop body.

2018-09-18  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/87239
    * gfortran.dg/elemental_function_2.f90 : New test.
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