[Octave-bug-tracker] [bug #57533] Incorrect error message when assigning to a subset of a 3+ dimensional array

[Clint]

URL:
  <https://savannah.gnu.org/bugs/?57533>

                 Summary: Incorrect error message when assigning to a subset
of a 3+ dimensional array
                 Project: GNU Octave
            Submitted by: terikin
            Submitted on: Fri 03 Jan 2020 08:25:37 PM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Clint
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.0
        Operating System: Any

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Details:

When making an assignment to a subset of a higher-dimensional array, the error
message can list incorrect dimensionality for op1.  The error message is
correct when the matrix receiving the assignment has only two dimensions.

Example of code giving incorrect error:

a = zeros(2, 2, 1);
b = ones(2, 2);
a(1, :, 1) = b;
>> error: =: nonconformant arguments (op1 is 2x2x1, op2 is 2x2)

But it is readily apparent that op1 is actually 1x2x1.

In contrast, when a is 2x2:

a = zeros(2, 2);
b = ones(2, 2);
a(1, :) = b;
>> error: =: nonconformant arguments (op1 is 1x2, op2 is 2x2)

Here, the error message correctly reports the dimensionality of the subset of
a that is being assigned to.


I've seen the same behavior in version 5.1.0 on Windows 10 and in version
4.2.2 on Ubuntu Linux.




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