[Octave-bug-tracker] [bug #49642] rethrow (lasterror ()) loses stack information from previous error structure

[Mike Miller]

Follow-up Comment #5, bug #49642 (project octave):

Here is a simpler example to demonstrate the error


>> union ({'a'}, 1)
error: union: cell array of strings cannot be combined with a nonstring value
error: called from
    validsetargs at line 39 column 9
    union at line 51 column 8
>> lasterror.stack.file
ans = /opt/gnu/octave/share/octave/4.2.0/m/set/private/validsetargs.m
ans = /opt/gnu/octave/share/octave/4.2.0/m/set/union.m
>> rethrow (lasterror ())
union: cell array of strings cannot be combined with a nonstring value
>> lasterror.stack.file
## nothing


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