[Octave-bug-tracker] [bug #52989] classdef: missing error messages on multiply defined properties

[A.R. Burgers]

URL:
  <http://savannah.gnu.org/bugs/?52989>

                 Summary: classdef: missing error messages on multiply defined
properties
                 Project: GNU Octave
            Submitted by: arb
            Submitted on: Sat 27 Jan 2018 10:34:25 PM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Missed Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

octave happily parses this class:


classdef zz2
    properties
        p1
        p1
    end
    properties (Dependent)
        p1
    end
    methods
        function val = f(obj)
            val = 'f';
        end
    end
end


A side effect of the multiply defined properties is that method f can not be
found: the next script


zz2_i = zz2;
f = zz2_i.f

gives this error message:


error: subsref: unknown method or property: f
error: called from
    run_zz2 at line 2 column 3


Also octave allows the same property name in a class and a superclass:


classdef zz < zzs
    properties
        p1 = 2;
    end
end



classdef zzs
    properties
        p1 = 1;
    end
end


which results on execution of this script


zz_i = zz;
p1 = zz_i.p1


in


p1 =  2


Is the case for both stable and dev.
I didn't find this reported in an earlier bug report, but can hardly imagine
this has gone unnoticed to date.






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