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https://github.com/Z3Prover/z3
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fix #7037
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@ -509,10 +509,10 @@ namespace smt {
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// Assuming `app` is equal to a constructor term, return the constructor enode
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inline enode * theory_datatype::oc_get_cstor(enode * app) {
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theory_var v = app->get_root()->get_th_var(get_id());
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SASSERT(v != null_theory_var);
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if (v == null_theory_var)
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return nullptr;
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v = m_find.find(v);
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var_data * d = m_var_data[v];
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SASSERT(d->m_constructor);
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return d->m_constructor;
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}
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@ -802,8 +802,9 @@ namespace smt {
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return false;
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func_decl* con = m_util.get_accessor_constructor(f);
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for (enode* app : ctx.enodes_of(f)) {
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enode* arg = app->get_arg(0)->get_root();
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if (is_constructor(arg) && arg->get_decl() != con)
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enode* arg = app->get_arg(0);
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enode* arg_con = oc_get_cstor(arg);
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if (arg_con && is_constructor(arg_con) && arg_con->get_decl() != con)
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return true;
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}
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return false;
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