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Fix segfault in dioph_eq.cpp by adding bounds check

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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-01-17 00:04:21 +00:00
parent b5202c65c0
commit 522aa69e09
2 changed files with 9 additions and 2 deletions
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4
src/math/lp/dioph_eq.cpp
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@ -1094,11 +1094,11 @@ namespace lp {
recalculate_entry(ei);
if (m_e_matrix.m_columns.back().size() == 0) {
if (!m_e_matrix.m_columns.empty() && m_e_matrix.m_columns.back().size() == 0) {
m_e_matrix.m_columns.pop_back();
m_var_register.shrink(m_e_matrix.column_count());
}
if (m_l_matrix.m_columns.back().size() == 0)
if (!m_l_matrix.m_columns.empty() && m_l_matrix.m_columns.back().size() == 0)
m_l_matrix.m_columns.pop_back();
}
remove_irrelevant_fresh_defs();