Fix caching problem

pystencils/cpu/cpujit.py

@@ -266,7 +266,6 @@ type_mapping = {
     np.complex128: (('PyComplex_RealAsDouble', 'PyComplex_ImagAsDouble'), 'ComplexDouble'),
 }
 
-
 template_extract_scalar = """
 PyObject * obj_{name} = PyDict_GetItemString(kwargs, "{name}");
 if( obj_{name} == NULL) {{  PyErr_SetString(PyExc_TypeError, "Keyword argument '{name}' missing"); return NULL; }};
@@ -418,7 +417,7 @@ def create_function_boilerplate_code(parameter_info, name, insert_checks=True):
                                                                  extract_function_imag=extract_function[1],
                                                                  target_type=target_type,
                                                                  real_type="float" if target_type == "ComplexFloat"
-                                                                           else "double",
+                                                                 else "double",
                                                                  name=param.symbol.name)
             else:
                 pre_call_code += template_extract_scalar.format(extract_function=extract_function,
@@ -564,8 +563,13 @@ def compile_module(code, code_hash, base_dir):
 
 def compile_and_load(ast, custom_backend=None):
     cache_config = get_cache_config()
-    code_hash_str = "mod_" + hashlib.sha256(generate_c(ast, dialect='c',
-                                                       custom_backend=custom_backend).encode()).hexdigest()
+
+    generated_code = generate_c(ast, dialect='c', custom_backend=custom_backend)
+    fields_accessed = str(ast.fields_accessed)
+
+    # Also die Information of the field size should be contained in the hash string. Due to padding the generated code
+    # can look similar for different field sizes.
+    code_hash_str = "mod_" + hashlib.sha256((generated_code + fields_accessed).encode()).hexdigest()
     code = ExtensionModuleCode(module_name=code_hash_str, custom_backend=custom_backend)
     code.add_function(ast, ast.function_name)