diff --git a/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm b/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
index cbfea59145..2876f0d997 100644
--- a/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
+++ b/modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
@@ -1100,7 +1100,8 @@ public:
     {
         const bool wasValid = isValid();
 
-        wrapper.setVisible (false);
+        // NB: making the wrapper invisible before removing it causes
+        // strange internal crashes in some Apple AUs.
         removeChildComponent (&wrapper);
         wrapper.setView (nil);
 
diff --git a/modules/juce_gui_basics/windows/juce_DocumentWindow.cpp b/modules/juce_gui_basics/windows/juce_DocumentWindow.cpp
index 65435e6e6d..6b4de7454f 100644
--- a/modules/juce_gui_basics/windows/juce_DocumentWindow.cpp
+++ b/modules/juce_gui_basics/windows/juce_DocumentWindow.cpp
@@ -107,11 +107,10 @@ void DocumentWindow::setTitleBarHeight (const int newHeight)
     repaintTitleBar();
 }
 
-void DocumentWindow::setTitleBarButtonsRequired (const int requiredButtons_,
-                                                 const bool positionTitleBarButtonsOnLeft_)
+void DocumentWindow::setTitleBarButtonsRequired (const int buttons, const bool onLeft)
 {
-    requiredButtons = requiredButtons_;
-    positionTitleBarButtonsOnLeft = positionTitleBarButtonsOnLeft_;
+    requiredButtons = buttons;
+    positionTitleBarButtonsOnLeft = onLeft;
     lookAndFeelChanged();
 }
 
diff --git a/modules/juce_gui_basics/windows/juce_DocumentWindow.h b/modules/juce_gui_basics/windows/juce_DocumentWindow.h
index 4ea516f737..5dde7cb901 100644
--- a/modules/juce_gui_basics/windows/juce_DocumentWindow.h
+++ b/modules/juce_gui_basics/windows/juce_DocumentWindow.h
@@ -205,13 +205,13 @@ public:
     virtual void maximiseButtonPressed();
 
     //==============================================================================
-    /** Returns the close button, (or 0 if there isn't one). */
+    /** Returns the close button, (or nullptr if there isn't one). */
     Button* getCloseButton() const noexcept;
 
-    /** Returns the minimise button, (or 0 if there isn't one). */
+    /** Returns the minimise button, (or nullptr if there isn't one). */
     Button* getMinimiseButton() const noexcept;
 
-    /** Returns the maximise button, (or 0 if there isn't one). */
+    /** Returns the maximise button, (or nullptr if there isn't one). */
     Button* getMaximiseButton() const noexcept;
 
     //==============================================================================
@@ -231,7 +231,7 @@ public:
     //==============================================================================
    #ifndef DOXYGEN
     /** @internal */
-    void paint (Graphics& g);
+    void paint (Graphics&);
     /** @internal */
     void resized();
     /** @internal */
@@ -241,7 +241,7 @@ public:
     /** @internal */
     BorderSize<int> getContentComponentBorder();
     /** @internal */
-    void mouseDoubleClick (const MouseEvent& e);
+    void mouseDoubleClick (const MouseEvent&);
     /** @internal */
     void userTriedToCloseWindow();
     /** @internal */
diff --git a/modules/juce_gui_extra/native/juce_mac_NSViewComponent.mm b/modules/juce_gui_extra/native/juce_mac_NSViewComponent.mm
index 8306617321..99feddee99 100644
--- a/modules/juce_gui_extra/native/juce_mac_NSViewComponent.mm
+++ b/modules/juce_gui_extra/native/juce_mac_NSViewComponent.mm
@@ -27,13 +27,13 @@ class NSViewAttachment  : public ReferenceCountedObject,
                           public ComponentMovementWatcher
 {
 public:
-    NSViewAttachment (NSView* const view_, Component& owner_)
-        : ComponentMovementWatcher (&owner_),
-          view (view_),
-          owner (owner_),
+    NSViewAttachment (NSView* const v, Component& comp)
+        : ComponentMovementWatcher (&comp),
+          view (v),
+          owner (comp),
           currentPeer (nullptr)
     {
-        [view_ retain];
+        [view retain];
 
         if (owner.isShowing())
             componentPeerChanged();