Check top-level VERBATIM in SUFFIX nothing.

src/codegen/codegen_neuron_cpp_visitor.cpp

@@ -2677,6 +2677,7 @@ void CodegenNeuronCppVisitor::print_codegen_routines_nothing() {
     print_headers_include();
     print_namespace_start();
     print_function_prototypes();
+    print_top_verbatim_blocks();
     print_global_variables_for_hoc();
     print_function_definitions();
     print_mechanism_register();

test/usecases/verbatim/nothing.mod

@@ -0,0 +1,11 @@
+NEURON { SUFFIX nothing }
+
+VERBATIM
+double foo = 42.0;
+ENDVERBATIM
+
+FUNCTION get_foo() {
+VERBATIM
+    return foo;
+ENDVERBATIM
+}

test/usecases/verbatim/test_nothing.py

@@ -0,0 +1,9 @@
+from neuron import h, gui
+
+def test_nothing():
+    assert h.get_foo() == 42.0
+
+if __name__ == "__main__":
+    test_nothing()
+
+