Fixed possible segfault

include/aidge/utils/DynamicAttributes.hpp

@@ -39,12 +39,8 @@ namespace Aidge {
 ///\todo managing complex types or excluding non-trivial, non-aggregate types
 class DynamicAttributes : public Attributes {
 public:
-    DynamicAttributes() {
-        mAnyUtils.emplace(typeid(DynamicAttributes), std::unique_ptr<AnyUtils<DynamicAttributes>>(new AnyUtils<DynamicAttributes>()));
-    }
-    DynamicAttributes(const std::map<std::string, future_std::any>& attrs): mAttrs(attrs) {
-        mAnyUtils.emplace(typeid(DynamicAttributes), std::unique_ptr<AnyUtils<DynamicAttributes>>(new AnyUtils<DynamicAttributes>()));
-    }
+    DynamicAttributes() = default;
+    DynamicAttributes(const std::map<std::string, future_std::any>& attrs): mAttrs(attrs) {}
 
     /**
      * \brief Returning an Attribute identified by its name

src/utils/DynamicAttributes.cpp

@@ -11,7 +11,11 @@
 
 #include "aidge/utils/DynamicAttributes.hpp"
 
-std::map<std::type_index, std::unique_ptr<Aidge::DynamicAttributes::AnyUtils_>> Aidge::DynamicAttributes::mAnyUtils;
+std::map<std::type_index, std::unique_ptr<Aidge::DynamicAttributes::AnyUtils_>> Aidge::DynamicAttributes::mAnyUtils = []() {
+    std::map<std::type_index, std::unique_ptr<Aidge::DynamicAttributes::AnyUtils_>> m;
+    m.emplace(typeid(DynamicAttributes), std::unique_ptr<AnyUtils<DynamicAttributes>>(new AnyUtils<DynamicAttributes>()));
+    return m;
+}();
 
 template<> void Aidge::DynamicAttributes::setAttr<future_std::any>(const std::string& name, const future_std::any& value)
 {