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fix memory alias bug and non-termination bug exposed by issue #184

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-08-31 14:45:10 -07:00
parent 0ed38ed59b
commit 963981b3a6
3 changed files with 10 additions and 6 deletions
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3
src/math/grobner/grobner.cpp
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@ -440,7 +440,8 @@ void grobner::merge_monomials(ptr_vector<monomial> & monomials) {
unsigned sz = monomials.size();
if (sz == 0)
return;
ptr_vector<monomial>& to_delete = m_tmp_monomials;
SASSERT(&m_del_monomials != &monomials);
ptr_vector<monomial>& to_delete = m_del_monomials;
to_delete.reset();
for (unsigned i = 1; i < sz; ++i) {
monomial * m1 = monomials[j];

1
src/math/grobner/grobner.h
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@ -110,6 +110,7 @@ protected:
};
svector<scope> m_scopes;
ptr_vector<monomial> m_tmp_monomials;
ptr_vector<monomial> m_del_monomials;
ptr_vector<expr> m_tmp_vars1;
ptr_vector<expr> m_tmp_vars2;
unsigned m_num_new_equations; // temporary variable