merging of trunk to fortran-dev?

[Janus Weil]

>> A couple of regressions appeared on fortran-dev -- clean check check out,  no
>> changes of mine:
>>
>> FAIL: gfortran.dg/class_9.f03  -O0  execution test
>> FAIL: gfortran.dg/dynamic_dispatch_1.f03  -O0  (internal compiler error)
>> FAIL: gfortran.dg/dynamic_dispatch_2.f03  -O0  (internal compiler error)
>> FAIL: gfortran.dg/dynamic_dispatch_3.f03  -O0  (internal compiler error)
>> FAIL: gfortran.dg/dynamic_dispatch_4.f03  -O0  execution test
>> FAIL: gfortran.dg/dynamic_dispatch_5.f03  -O0  (internal compiler error)
>> FAIL: gfortran.dg/dynamic_dispatch_8.f03  -O0  execution test
>>
>> These are all OOP-related. Janus, could you have a look, please?
>
> Yes, I can confirm this (apart from dynamic_dispatch_4, which works for me).
>
> First guess: My patch for PR42353 (which makes the vtypes and vtabs
> private). Probably Paul was right with his suspicion that this might
> cause trouble on the branch. Will investigate.

Yes, this one is definitely the culprit. If I revert the patch for
PR42353, the failures above go away (but then of course class_13.f03
fails, which is the test case for this PR).

Paul, any idea what to do (i.e. how to fix PR42353 on the branch)?

Cheers,
Janus