[#301] Fix warning

Author: elBoberido

iceoryx2-bb/cxx/include/iox2/bb/into.hpp

@@ -15,6 +15,7 @@
 #ifndef IOX2_BB_INTO_HPP
 #define IOX2_BB_INTO_HPP
 
+#include "iox2/legacy/attributes.hpp"
 #include "iox2/legacy/type_traits.hpp"
 
 namespace iox2 {
@@ -43,7 +44,7 @@ struct extract_into_type<lossy<T>> {
 template <typename SourceType, typename DestinationType>
 struct FromTrait {
     // AXIVION Next Construct AutosarC++19_03-A7.1.5 : 'auto' is only used for the generic implementation which will always result in a compile error
-    static auto from(const SourceType& value) noexcept {
+    static auto from(const SourceType& value IOX2_MAYBE_UNUSED) noexcept {
         static_assert(legacy::always_false_v<SourceType> && legacy::always_false_v<DestinationType>, "\n \
 Conversion for the specified types is not implemented!\n \
 Please specialize 'FromTrait::from'!\n \

iceoryx2-bb/cxx/tests/src/into_tests.cpp

@@ -32,8 +32,8 @@ enum class B : uint8_t {
 namespace iox2 {
 namespace bb {
 template <>
-constexpr auto from<A, B>(A e) noexcept -> B {
-    switch (e) {
+constexpr auto from<A, B>(A value) noexcept -> B {
+    switch (value) {
     case A::A1:
         return B::B1;
     case A::A2: