Re: Regression between 4.61 and 4.65 for problems which can be preprocessed to almost nothing

[Peter Cawley]

Hi Andrew,

Thank you for that.

Regards,

Peter

On Tue, Jul 14, 2020 at 12:22 AM Andrew Makhorin <mao@gnu.org> wrote:

Thank you for your bug report.

...

To fix the bug please modify the routine ios_create_pool (file
src/draft/glpios01.c, lines 1391-1397) as follows:

IOSPOOL *ios_create_pool(glp_tree *tree)
{     /* create cut pool */
      IOSPOOL *pool;
      pool = glp_create_prob();
#if 1 /* 14/VII-2020 */
      if (tree->mip->n)
#endif
      glp_add_cols(pool, tree->mip->n);
      return pool;
}