Module: ppl/ppl Branch: master Commit: d054a83797b9b861addd7cdc5abac091edaf5865 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=d054a83797b9b...

Author: Enea Zaffanella zaffanella@cs.unipr.it Date: Sun Mar 7 11:36:11 2010 +0100

Corrected an invalid reference bug in PIP_Solution_Node::update_tableau(). The addition of tableau rows invalidates previously computed references. Thanks to Marco Poletti for reporting this.

---

src/PIP_Tree.cc | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/PIP_Tree.cc b/src/PIP_Tree.cc index d970067..79d254e 100644 --- a/src/PIP_Tree.cc +++ b/src/PIP_Tree.cc @@ -1644,8 +1644,10 @@ PIP_Solution_Node::update_tableau(const PIP_Problem& pip, // This might be faster however. tableau.s.add_zero_rows(1, Row::Flags()); tableau.t.add_zero_rows(1, Row::Flags()); - neg_assign_row(tableau.s[1 + row_id], v_row); - neg_assign_row(tableau.t[1 + row_id], p_row); + // NOTE: addition of rows invalidates references v_row and p_row + // due to possible matrix reallocations: recompute them. + neg_assign_row(tableau.s[1 + row_id], tableau.s[row_id]); + neg_assign_row(tableau.t[1 + row_id], tableau.t[row_id]); sign.push_back(row_sign(tableau.t[1 + row_id], big_dimension)); special_equality_row = mapping.size(); basis.push_back(false);