diff --git a/.gitignore b/.gitignore
index b630a9a..c578924 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-build/
+build*/
 third_party/
 
 # Editor Specific
diff --git a/code/api/include/allscale/api/core/impl/reference/treeture.h b/code/api/include/allscale/api/core/impl/reference/treeture.h
index b118dca..22e2351 100755
--- a/code/api/include/allscale/api/core/impl/reference/treeture.h
+++ b/code/api/include/allscale/api/core/impl/reference/treeture.h
@@ -585,7 +585,7 @@ namespace reference {
 	public:
 
 		template<typename ... Args>
-		dependencies(const Args& ... args) : list({args...}) {}
+		dependencies(const Args& ... args) : list({{args...}}) {}
 
 		dependencies(const dependencies&) = default;
 		dependencies(dependencies&&) = default;
diff --git a/code/api/include/allscale/api/user/data/map.h b/code/api/include/allscale/api/user/data/map.h
index 2d88a58..3543e84 100755
--- a/code/api/include/allscale/api/user/data/map.h
+++ b/code/api/include/allscale/api/user/data/map.h
@@ -140,7 +140,7 @@ namespace user {
 		/**
 		 * An operator to load an instance of this range from the given archive.
 		 */
-		static SetRegion load(utils::Archive& a) {
+		static SetRegion load(utils::Archive&) {
 			assert_not_implemented();
 			return SetRegion();
 		}
@@ -148,7 +148,7 @@ namespace user {
 		/**
 		 * An operator to store an instance of this range into the given archive.
 		 */
-		void store(utils::Archive& a) const {
+		void store(utils::Archive&) const {
 			assert_not_implemented();
 			// nothing so far
 		}
@@ -255,11 +255,11 @@ namespace user {
 			}
 		}
 
-		void save(utils::Archive& a, const region_type& keys) const {
+		void save(utils::Archive&, const region_type&) const {
 			assert_not_implemented();
 		}
 
-		void load(utils::Archive& a) {
+		void load(utils::Archive&) {
 			assert_not_implemented();
 		}
 
diff --git a/code/api/include/allscale/api/user/operator/pfor.h b/code/api/include/allscale/api/user/operator/pfor.h
index 76e4656..85fc9c9 100755
--- a/code/api/include/allscale/api/user/operator/pfor.h
+++ b/code/api/include/allscale/api/user/operator/pfor.h
@@ -748,7 +748,9 @@ namespace user {
 	template<typename Iter>
 	class neighborhood_sync_dependency : public detail::loop_dependency {
 
-		std::array<detail::iteration_reference<Iter>,3> deps;
+		using deps_list = std::array<detail::iteration_reference<Iter>,3>;
+
+		deps_list deps;
 
 		std::size_t size;
 
@@ -758,7 +760,7 @@ namespace user {
 	public:
 
 		neighborhood_sync_dependency(const detail::iteration_reference<Iter>& loop)
-			: deps({ loop }), size(1) {}
+			: deps({{ loop }}), size(1) {}
 
 		auto toCoreDependencies() const {
 			return core::after(deps[0],deps[1],deps[2]);
@@ -776,12 +778,12 @@ namespace user {
 				const iter_dependency& right = dependency.getRight();
 
 				// combine sub-dependencies
-				iter_dependency start ({left.getRange().begin(),left.getRange().begin()});
-				iter_dependency finish({right.getRange().end(), right.getRange().end() });
+				iter_dependency start ({{left.getRange().begin(),left.getRange().begin()}});
+				iter_dependency finish({{right.getRange().end(), right.getRange().end() }});
 
 				return {
-					neighborhood_sync_dependency({ start, left,  right  }),
-					neighborhood_sync_dependency({ left,  right, finish })
+					neighborhood_sync_dependency(deps_list{{ start, left,  right  }}),
+					neighborhood_sync_dependency(deps_list{{ left,  right, finish }})
 				};
 			}
 
@@ -807,8 +809,8 @@ namespace user {
 
 			// and pack accordingly
 			return {
-				leftPart.covers(left.grow(full))   ? neighborhood_sync_dependency({ a,b,c }) : *this,
-				rightPart.covers(right.grow(full)) ? neighborhood_sync_dependency({ b,c,d }) : *this
+				leftPart.covers(left.grow(full))   ? neighborhood_sync_dependency(deps_list{{ a,b,c }}) : *this,
+				rightPart.covers(right.grow(full)) ? neighborhood_sync_dependency(deps_list{{ b,c,d }}) : *this
 			};
 
 		}
diff --git a/code/api/test/user/operator/pfor.cc b/code/api/test/user/operator/pfor.cc
index ee95883..c954120 100644
--- a/code/api/test/user/operator/pfor.cc
+++ b/code/api/test/user/operator/pfor.cc
@@ -146,8 +146,8 @@ namespace user {
 		using Point = std::array<int,3>;
 		using Grid = std::array<std::array<std::array<int,N>,N>,N>;
 
-		Point zero = {0,0,0};
-		Point full = {N,N,N};
+		Point zero = {{0,0,0}};
+		Point full = {{N,N,N}};
 
 		// create data
 		Grid* data = new Grid();
@@ -550,8 +550,8 @@ namespace user {
 
 		using range = detail::range<std::array<int,2>>;
 
-		range limit({0,2},{5,7});
-		range a({1,4},{2,5});
+		range limit({{0,2}},{{5,7}});
+		range a({{1,4}},{{2,5}});
 
 		EXPECT_EQ("[[0,2],[5,7])",toString(limit));
 		EXPECT_EQ("[[1,4],[2,5])",toString(a));