[Octave-bug-tracker] [bug #62080] Unexpected warnings with octave_base_dld_value class -- are they harmless?

[Arun Giridhar]

URL:
  <https://savannah.gnu.org/bugs/?62080>

                 Summary: Unexpected warnings with octave_base_dld_value class
-- are they harmless?
                 Project: GNU Octave
            Submitted by: arungiridhar
            Submitted on: Fri 18 Feb 2022 11:50:20 AM EST
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: GNU/Linux

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Details:

The octave_base_dld_value class was added in this recent changeset:
https://hg.savannah.gnu.org/hgweb/octave/rev/b92316e295a2

There is a sudden large increase in compiler warnings like the following,
using Clang 13.0.1. Please verify if they are harmless warnings.


../libinterp/octave-value/ov-base.h:933:26: warning: explicitly defaulted copy
assignment operator is implicitly deleted [-Wdefaulted-function-deleted]
  octave_base_dld_value& operator = (const octave_base_dld_value&) = default;
                         ^
../libinterp/octave-value/ov-base.h:920:25: note: copy assignment operator of
'octave_base_dld_value' is implicitly deleted because base class
'octave_base_value' has a deleted copy assignment operator
octave_base_dld_value : public octave_base_value
                        ^
../libinterp/octave-value/ov-base.h:899:37: note: copy assignment operator of
'octave_base_value' is implicitly deleted because field 'count' has a deleted
copy assignment operator
  octave::refcount<octave_idx_type> count;
                                    ^
../liboctave/util/oct-refcount.h:50:15: note: 'operator=' has been explicitly
marked deleted here
    refcount& operator = (const refcount&) = delete;
              ^






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