Index: uspace/lib/cpp/include/impl/initializer_list.hpp
===================================================================
--- uspace/lib/cpp/include/impl/initializer_list.hpp	(revision e2b55ac9e13afd066c864c6d8bef841b553e6018)
+++ uspace/lib/cpp/include/impl/initializer_list.hpp	(revision 134fd03747c8584355b2a9e5ddbaa8c87ca41499)
@@ -47,5 +47,7 @@
             using iterator        = const_iterator;
 
-            constexpr initializer_list() noexcept;
+            constexpr initializer_list() noexcept
+                : begin_{nullptr}, size_{0}
+            { /* DUMMY BODY */ }
 
             constexpr size_type size() const noexcept