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Harden scoped implicit-variable RAII in TPTP frontend

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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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copilot-swe-agent[bot] 2026-05-13 15:56:14 +00:00 • committed by GitHub
parent 31269243ae
commit e50c22099d
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1 changed files with 5 additions and 1 deletions
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6
src/cmd_context/tptp_frontend.cpp
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@ -414,7 +414,7 @@ class tptp_parser {
app* get_or_create_implicit_var(std::string const& n) { app* get_or_create_implicit_var(std::string const& n) {
if (!m_implicit_scope) if (!m_implicit_scope)
throw parse_error("internal parser error: implicit variable scope is missing"); throw parse_error("internal parser error: implicit variable scope is missing (unexpected parser state)");
auto it = m_implicit_scope->vars.find(n); auto it = m_implicit_scope->vars.find(n);
if (it != m_implicit_scope->vars.end()) return it->second; if (it != m_implicit_scope->vars.end()) return it->second;
app* c = m.mk_const(symbol(n), m_univ); app* c = m.mk_const(symbol(n), m_univ);
@ -432,6 +432,10 @@ class tptp_parser {
m_prev_scope(p.m_implicit_scope) { m_prev_scope(p.m_implicit_scope) {
m_p.m_implicit_scope = &scope; m_p.m_implicit_scope = &scope;
} }
scoped_implicit_vars(scoped_implicit_vars const&) = delete;
scoped_implicit_vars& operator=(scoped_implicit_vars const&) = delete;
scoped_implicit_vars(scoped_implicit_vars&&) = delete;
scoped_implicit_vars& operator=(scoped_implicit_vars&&) = delete;
~scoped_implicit_vars() { ~scoped_implicit_vars() {
m_p.m_implicit_scope = m_prev_scope; m_p.m_implicit_scope = m_prev_scope;
} }