??

Author: dweindl

src/model.cpp

@@ -2875,15 +2875,15 @@ void Model::fdwdp(realtype const t, realtype const* x, bool include_static) {
 }
 
 void Model::fdwdx(realtype const t, realtype const* x, bool include_static) {
-    if (!nw || !nx_solver)
+    if (!nw)
         return;
 
     fw(t, x, include_static);
 
     derived_state_.dwdx_.zero();
     if (pythonGenerated) {
         auto dwdx_hierarchical_0 = derived_state_.dwdx_hierarchical_.at(0);
-        if (!dwdx_hierarchical_0.capacity())
+        if (!dwdx_hierarchical_0.data() || !dwdx_hierarchical_0.capacity())
             return;
 
         fdwdw(t, x, include_static);