Remove warnings in Clang

modules/space/rendering/renderablestars.cpp

@@ -41,6 +41,8 @@
 #include <cstdint>
 #include <fstream>
 
+#include <type_traits>
+
 namespace {
     constexpr const char* _loggerCat = "RenderableStars";
 
@@ -56,27 +58,39 @@ namespace {
 
     constexpr int8_t CurrentCacheVersion = 2;
 
-    struct CommonDataLayout {
+    struct ColorVBOLayout {
+        std::array<float, 4> position; // (x,y,z,e)
+        float value;
+        float luminance;
+        float absoluteMagnitude;
+    };
+
+    struct VelocityVBOLayout {
         std::array<float, 4> position; // (x,y,z,e)
         float value;
         float luminance;
         float absoluteMagnitude;
 
-    };
-
-    struct ColorVBOLayout : public CommonDataLayout {};
-
-    struct VelocityVBOLayout : public CommonDataLayout {
         float vx; // v_x
         float vy; // v_y
         float vz; // v_z
     };
 
-    struct SpeedVBOLayout : public CommonDataLayout {
+    struct SpeedVBOLayout {
+        std::array<float, 4> position; // (x,y,z,e)
+        float value;
+        float luminance;
+        float absoluteMagnitude;
+
         float speed;
     };
 
-    struct OtherDataLayout : public CommonDataLayout {};
+    struct OtherDataLayout {
+        std::array<float, 4> position; // (x,y,z,e)
+        float value;
+        float luminance;
+        float absoluteMagnitude;
+    };
 
     constexpr openspace::properties::Property::PropertyInfo SpeckFileInfo = {
         "SpeckFile",
@@ -407,7 +421,7 @@ void RenderableStars::initializeGL() {
             LERROR(fmt::format("Could not find other data column {}", _queuedOtherData));
         }
         else {
-            _otherDataOption = std::distance(_dataNames.begin(), it);
+            _otherDataOption = static_cast<int>(std::distance(_dataNames.begin(), it));
             _queuedOtherData.clear();
         }
     }