Here is the issue:
I found a bug of Scipy SLSQP algorithm in developing my project. I post the issue to Scipy community to discuss with the developers and they gave me some ideas. Here is the discussion: https://github.com/scipy/scipy/issues/7618. Now what they supposed is to change some of the basic Fortran code of SLSQP algorithm and test it with some larger-scale problem instead of some toy examples. I can test it with my project, but the problem is I can't find the Fortran code of SLSQP on my computer. Can anyone tell me how can I change the code and test it like what the developer's has done?