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Fix nullptr dereference in pp_symbol when handling null symbol names (#7790)

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* Initial plan

* Fix nullptr dereference in pp_symbol with null symbol names

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2025-08-17 10:25:51 -07:00 • committed by GitHub
parent a121e6c6e9
commit d8bf0e047f
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1 changed files with 7 additions and 2 deletions
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9
src/model/model_smt2_pp.cpp
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@ -42,8 +42,13 @@ static unsigned pp_symbol(std::ostream & out, symbol const & s) {
return static_cast<unsigned>(str.length());
}
else {
out << s.bare_str();
return static_cast<unsigned>(strlen(s.bare_str()));
if (s.is_null()) {
out << "null";
return 4; // length of "null"
} else {
out << s.bare_str();
return static_cast<unsigned>(strlen(s.bare_str()));
}
}
}