[Octave-bug-tracker] [bug #56711] Three input form of diag can segfault if a cell array is passed

[Rik]

Follow-up Comment #3, bug #56711 (project octave):

Here is a backtrace of the segfault.


0x00007f07b9270637 in octave::refcount<long>::operator-- (
    this=0x7f07b9071250 <vtable for octave::tree_identifier+24>)
    at ./liboctave/util/oct-refcount.h:96
96            return OCTAVE_ATOMIC_DECREMENT (&m_count);
(gdb) bt
#0  0x00007f07b9270637 in octave::refcount<long>::operator-- (
    this=0x7f07b9071250 <vtable for octave::tree_identifier+24>)
    at ./liboctave/util/oct-refcount.h:96
#1  0x00007f07b92700d8 in octave_value::operator= (this=0x7f07802f4130,
a=...)
    at ./libinterp/octave-value/ov.h:360
#2  0x00007f07b831cbc2 in Array<octave_value>::diag (this=0x7f07803b04b0, m=2,
n=1)
    at ./liboctave/array/Array.cc:2621
#3  0x00007f07b860d753 in Cell::diag (this=0x7f07803b04b0, m=2, n=1)
    at libinterp/corefcn/Cell.cc:354
#4  0x00007f07b83fd82c in octave_base_matrix<Cell>::diag (this=0x7f07803b04a0,
m=2, n=1)
    at libinterp/octave-value/ov-base-mat.h:136
#5  0x00007f07b86e3eaf in octave_value::diag (this=0x7f078ea00310, m=2, n=1)
    at ./libinterp/octave-value/ov.h:1311
#6  0x00007f07b86bd959 in Fdiag (args=...) at libinterp/corefcn/data.cc:1237


Of course, it's not at all where I expected it to be.


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