[Octave-bug-tracker] [bug #64778] VM: test anovan crashes octave

[Arun Giridhar]

Follow-up Comment #4, bug #64778 (project octave):

Tracing the path more closely, it seems to be about a nested function called
mDesignMatrix() inside anovan.m:

Inside a switch-case statement, these statements cause a problem. 


      case 3
        ## Type III (partial, constrained or marginal) sums-of-squares
        ss = zeros (Nt, 1)
        mDesignMatrix ()
        [b, sse, resid, ucov] = lmfit (cell2mat (X), Y, W)
        for j = 1:Nt
          XS = cell2mat (X(1:Nt+1 != j+1));
          [jnk, R] = lmfit (XS, Y, W)
          ss(j) = R - sse
        endfor
        sstype_char = "III"


There is a call to nested function mDesignMatrix() which inherits the scope
and variables of the calling location, then it's followed by a call to lmfit,
which is where the error is printed, but there's no problematic code in lmfit
itself. There seems to be a scope discontinuity when leaving a nested function
and going to another function.



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