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Fix static analysis findings: uninitialized vars, bitwise shift UB, garbage values

Browse source 
- nla_core.cpp: Initialize j = null_lpvar in is_octagon_term
- bit2int.cpp: Initialize sign_p, sign_n, sz_p, sz_n
- act_cache.cpp: Initialize debug vars to nullptr
- enum2bv_rewriter.cpp: Use unsigned literal in 1u << idx
- bit_matrix.cpp: Use unsigned literal in 1u << (n-1)
- bit_util.cpp: Guard against bit_shift == 0 in shl/shr
- mpff.cpp: Cast exp to unsigned before shifting
- sorting_network.h: Guard against bits == 0
- dl_sparse_table.h: Use >= 64 instead of == 64

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-03-02 00:13:55 +00:00
parent 122ee94935
commit 8e94cad8ab
9 changed files with 42 additions and 22 deletions
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2
src/ast/rewriter/enum2bv_rewriter.cpp
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@ -64,7 +64,7 @@ struct enum2bv_rewriter::imp {
unsigned bv_size = get_bv_size(s);
sort_ref bv_sort(m_bv.mk_sort(bv_size), m);
if (is_unate(s))
return m_bv.mk_numeral(rational((1 << idx) - 1), bv_sort.get());
return m_bv.mk_numeral(rational((1u << idx) - 1), bv_sort.get());
else
return m_bv.mk_numeral(rational(idx), bv_sort.get());
}