Attempt to fix Clang warnings

apps/openmw/mwgui/savegamedialog.cpp

@@ -322,7 +322,8 @@ namespace MWGui
             if (i == pos)
                 mCurrentSlot = &*it;
         }
-        assert(mCurrentSlot && "Can't find selected slot");
+        if (!mCurrentSlot)
+            throw std::runtime_error("Can't find selected slot");
 
         std::stringstream text;
         time_t time = mCurrentSlot->mTimeStamp;

apps/openmw/mwgui/windowbase.cpp

@@ -76,6 +76,8 @@ void WindowModal::close()
 NoDrop::NoDrop(DragAndDrop *drag, MyGUI::Widget *widget)
     : mDrag(drag), mWidget(widget), mTransparent(false)
 {
+    if (!mWidget)
+        throw std::runtime_error("NoDrop needs a non-NULL widget!");
 }
 
 void NoDrop::onFrame(float dt)

apps/openmw/mwmechanics/aiescort.cpp

@@ -92,7 +92,11 @@ namespace MWMechanics
 
         if(distanceBetweenResult <= mMaxDist * mMaxDist)
         {
-            if(pathTo(actor,ESM::Pathgrid::Point(mX,mY,mZ),duration)) //Returns true on path complete
+            ESM::Pathgrid::Point point(mX,mY,mZ);
+            point.mAutogenerated = 0;
+            point.mConnectionNum = 0;
+            point.mUnknown = 0;
+            if(pathTo(actor,point,duration)) //Returns true on path complete
                 return true;
             mMaxDist = 450;
         }

apps/openmw/mwmechanics/autocalcspell.cpp

@@ -220,7 +220,7 @@ namespace MWMechanics
         if (spell->mData.mFlags & ESM::Spell::F_Always)
             return 100.f;
 
-        float skillTerm;
+        float skillTerm = 0;
         if (effectiveSchool != -1)
             skillTerm = 2.f * actorSkills[mapSchoolToSkill(effectiveSchool)];
         else

apps/openmw/mwmechanics/character.cpp

@@ -1611,7 +1611,7 @@ void CharacterController::update(float duration)
         if(mMovementAnimationControlled && mPtr.getClass().isActor())
             world->queueMovement(mPtr, moved);
     }
-    else if (mAnimation)
+    else
         mAnimation->updateEffects(duration);
     mSkipAnim = false;
 

apps/openmw/mwworld/physicssystem.cpp

@@ -385,7 +385,6 @@ namespace MWWorld
                     if(tracer.mFraction >= 1.0f)
                     {
                         newPosition = tracer.mEndPos; // ok to move, so set newPosition
-                        remainingTime *= (1.0f-tracer.mFraction); // FIXME: remainingTime is no longer used so don't set it?
                         break;
                     }
                     else
@@ -406,7 +405,6 @@ namespace MWWorld
                     // precision can be lost due to any math Bullet does internally). Since we
                     // aren't performing any collision detection, we want to reject the next
                     // position, so that we don't slowly move inside another object.
-                    remainingTime *= (1.0f-tracer.mFraction); // FIXME: remainingTime is no longer used so don't set it?
                     break;
                 }
 

apps/openmw/mwworld/weather.cpp

@@ -498,7 +498,8 @@ void WeatherManager::update(float duration)
                 else if (sound == 1) soundName = &mThunderSoundID1;
                 else if (sound == 2) soundName = &mThunderSoundID2;
                 else if (sound == 3) soundName = &mThunderSoundID3;
-                MWBase::Environment::get().getSoundManager()->playSound(*soundName, 1.0, 1.0);
+                if (soundName)
+                    MWBase::Environment::get().getSoundManager()->playSound(*soundName, 1.0, 1.0);
                 mThunderSoundDelay = 1000;
             }
 

apps/openmw/mwworld/worldimp.cpp

@@ -1045,7 +1045,7 @@ namespace MWWorld
 
         CellStore *currCell = ptr.isInCell() ? ptr.getCell() : NULL; // currCell == NULL should only happen for player, during initial startup
         bool isPlayer = ptr == mPlayer->getPlayer();
-        bool haveToMove = isPlayer || mWorldScene->isCellActive(*currCell);
+        bool haveToMove = isPlayer || (currCell && mWorldScene->isCellActive(*currCell));
 
         if (currCell != newCell)
         {

components/esmterrain/storage.cpp

@@ -147,8 +147,8 @@ namespace ESMTerrain
         Ogre::Vector3 normal;
         Ogre::ColourValue color;
 
-        float vertY;
-        float vertX;
+        float vertY = 0;
+        float vertX = 0;
 
         float vertY_ = 0; // of current cell corner
         for (int cellY = startY; cellY < startY + std::ceil(size); ++cellY)

components/widgets/box.cpp

@@ -197,8 +197,17 @@ namespace Gui
             MyGUI::IntCoord widgetCoord;
             widgetCoord.left = curX;
             widgetCoord.top = mPadding + (getSize().height-mPadding*2 - height) / 2;
-            int width = sizes[i].second ? sizes[i].first.width + (getSize().width-mPadding*2 - total_width)/h_stretched_count
-                                        : sizes[i].first.width;
+
+            int width = 0;
+            if (sizes[i].second)
+            {
+                if (h_stretched_count == 0)
+                    throw std::logic_error("unexpected");
+                width = sizes[i].first.width + (getSize().width-mPadding*2 - total_width)/h_stretched_count;
+            }
+            else
+                width = sizes[i].first.width;
+
             widgetCoord.width = width;
             widgetCoord.height = height;
             w->setCoord(widgetCoord);
@@ -334,8 +343,17 @@ namespace Gui
             MyGUI::IntCoord widgetCoord;
             widgetCoord.top = curY;
             widgetCoord.left = mPadding + (getSize().width-mPadding*2 - width) / 2;
-            int height = sizes[i].second ? sizes[i].first.height + (getSize().height-mPadding*2 - total_height)/v_stretched_count
-                                        : sizes[i].first.height;
+
+            int height = 0;
+            if (sizes[i].second)
+            {
+                if (v_stretched_count == 0)
+                    throw std::logic_error("unexpected");
+                height = sizes[i].first.height + (getSize().height-mPadding*2 - total_height)/v_stretched_count;
+            }
+            else
+                height = sizes[i].first.height;
+
             widgetCoord.height = height;
             widgetCoord.width = width;
             w->setCoord(widgetCoord);