attempt 2: ignore cvode

Author: 1uc

src/codegen/codegen_helper_visitor.cpp

@@ -218,10 +218,12 @@ void CodegenHelperVisitor::check_cvode_codegen(const ast::Program& node) {
                                });
         });
 
+    const auto& cvode_nodes = collect_nodes(*breakpoint_node, {AstNodeType::CVODE_BLOCK});
+
     // only case when we emit CVODE code is if we have exactly one block, and
     // that block is either a KINETIC/DERIVATIVE with any method, or a
     // PROCEDURE with `after_cvode` method
-    if (solve_nodes.size() == 1 && (kinetic_or_derivative_nodes.size() || using_cvode)) {
+    if (solve_nodes.size() == 1 && !cvode_nodes.empty() && (kinetic_or_derivative_nodes.size() || using_cvode)) {
         logger->debug("Will emit code for CVODE");
         info.emit_cvode = true;
     }