[Octave-bug-tracker] [bug #30478] prelinking causes octave to crash

[John W. Eaton]

Follow-up Comment #20, bug #30478 (project octave):

Since the crash seems to be related to BLAS, here is a guess.  In the file
src/octave.cc in the function octave_main, we have


 // The idea here is to force xerbla to be referenced so that we will
  // link to our own version instead of the one provided by the BLAS
  // library.  But octave_NaN should never be -1, so we should never
  // actually call xerbla.

  if (octave_NaN == -1)
    F77_FUNC (xerbla, XERBLA) ("octave", 13, 6L);


Does removing or commenting out these lines avoid the crash?

Also I just noticed that this call is probably not written correctly.  I
think it should be


    F77_FUNC (xerbla, XERBLA) ("octave", 13, F77_CHAR_ARG_LEN (6));


instead, and I've made that change.  Though since the call should never be
executed, I can't see the harm this mistake could cause, and with gfortran, I
think the normal thing is to append the character string length as an extra
argument, so it should probably work on GNU/Linux systems with gfortran
anyway.


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