[Patch, fortran] PR68196 [4.9/5/6 Regression] ICE on function result with procedure pointer component

[Paul Richard Thomas <paul dot richard dot thomas at gmail dot com>]

Dear All,

The patch for these PRs is fully explained by the the comments and/or
changelogs. PR66465 has no connection with PR68196, other than Damian
asking if it is connected!

Bootstrapped and regtested on x86_64/FC21 - OK for trunk and a few
weeks later 4.9 and 5 branches?

Cheers

Paul

2015-11-04  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/68196
    * class.c (has_finalizer_component): Prevent infinite recursion
    through this function if the derived type and that of its
    component are the same.
    * trans-types.c (gfc_get_derived_type): Do the same for proc
    pointers by ignoring the explicit interface for the component.

    PR fortran/66465
    * check.c (same_type_check): If either of the expressions is
    BT_PROCEDURE, use the typespec from the symbol, rather than the
    expression.

2015-11-04  Paul Thomas  <pault@gcc.gnu.org>

    PR fortran/68196
    * gfortran.dg/proc_ptr_47.f90: New test.

    PR fortran/66465
    * gfortran.dg/pr66465.f90: New test.

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