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fix seg-fault from #1244

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-09-05 07:35:37 -07:00
parent 799fb4a0d1
commit a4cf2726fd
3 changed files with 9 additions and 8 deletions
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2
src/ast/rewriter/seq_rewriter.cpp
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@ -1946,7 +1946,7 @@ bool seq_rewriter::solve_itos(unsigned szl, expr* const* ls, unsigned szr, expr*
}
}
if (szr == 1 && m_util.str.is_itos(rs[0], r) && !m_util.str.is_itos(ls[0])) {
if (szr == 1 && szl >= 1 && m_util.str.is_itos(rs[0], r) && !m_util.str.is_itos(ls[0])) {
return solve_itos(szr, rs, szl, ls, rhs, lhs, is_sat);
}