Fixed some compiler warnings

extras/AudioPluginHost/AudioPluginHost.jucer

@@ -7,7 +7,7 @@
               companyCopyright="ROLI Ltd.">
   <EXPORTFORMATS>
     <XCODE_MAC targetFolder="Builds/MacOSX" vstFolder="" rtasFolder="~/SDKs/PT_80_SDK"
-               objCExtraSuffix="M73TRi" extraCompilerFlags="-Wall -Wshadow -Wstrict-aliasing -Wconversion -Wsign-compare -Woverloaded-virtual -Wextra-semi"
+               objCExtraSuffix="M73TRi" extraCompilerFlags="-Wall -Wno-missing-field-initializers -Wshadow-all -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Wconditional-uninitialized -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion  -Wunused-private-field -Wbool-conversion -Wextra-semi -Wno-ignored-qualifiers -Wunreachable-code -Wzero-as-null-pointer-constant -Wcast-align -Winconsistent-missing-destructor-override -Wshift-sign-overflow -Wundefined-func-template -Wnullable-to-nonnull-conversion"
                smallIcon="c97aUr" bigIcon="c97aUr" microphonePermissionNeeded="1">
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" isDebug="1" targetName="AudioPluginHost"/>

extras/AudioPluginHost/Builds/MacOSX/AudioPluginHost.xcodeproj/project.pbxproj

@@ -801,7 +801,7 @@
 				INFOPLIST_PREPROCESS = NO;
 				INSTALL_PATH = "$(HOME)/Applications";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
-				OTHER_CPLUSPLUSFLAGS = "-Wall -Wshadow -Wstrict-aliasing -Wconversion -Wsign-compare -Woverloaded-virtual -Wextra-semi";
+				OTHER_CPLUSPLUSFLAGS = "-Wall -Wno-missing-field-initializers -Wshadow-all -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Wconditional-uninitialized -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion  -Wunused-private-field -Wbool-conversion -Wextra-semi -Wno-ignored-qualifiers -Wunreachable-code -Wzero-as-null-pointer-constant -Wcast-align -Winconsistent-missing-destructor-override -Wshift-sign-overflow -Wundefined-func-template -Wnullable-to-nonnull-conversion";
 				PRODUCT_BUNDLE_IDENTIFIER = com.roli.juce.pluginhost;
 				PRODUCT_NAME = "AudioPluginHost";
 				USE_HEADERMAP = NO;
@@ -847,7 +847,7 @@
 				INSTALL_PATH = "$(HOME)/Applications";
 				LLVM_LTO = YES;
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
-				OTHER_CPLUSPLUSFLAGS = "-Wall -Wshadow -Wstrict-aliasing -Wconversion -Wsign-compare -Woverloaded-virtual -Wextra-semi";
+				OTHER_CPLUSPLUSFLAGS = "-Wall -Wno-missing-field-initializers -Wshadow-all -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Wconditional-uninitialized -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion  -Wunused-private-field -Wbool-conversion -Wextra-semi -Wno-ignored-qualifiers -Wunreachable-code -Wzero-as-null-pointer-constant -Wcast-align -Winconsistent-missing-destructor-override -Wshift-sign-overflow -Wundefined-func-template -Wnullable-to-nonnull-conversion";
 				PRODUCT_BUNDLE_IDENTIFIER = com.roli.juce.pluginhost;
 				PRODUCT_NAME = "AudioPluginHost";
 				USE_HEADERMAP = NO;

extras/AudioPluginHost/Source/Filters/FilterGraph.h

@@ -40,7 +40,7 @@ class FilterGraph   : public FileBasedDocument,
 public:
     //==============================================================================
     FilterGraph (AudioPluginFormatManager&);
-    ~FilterGraph();
+    ~FilterGraph() override;
 
     //==============================================================================
     using NodeID = AudioProcessorGraph::NodeID;

extras/AudioPluginHost/Source/Filters/FilterIOConfiguration.h

@@ -35,7 +35,7 @@ class FilterIOConfigurationWindow   : public  AudioProcessorEditor
 {
 public:
     FilterIOConfigurationWindow (AudioProcessor&);
-    ~FilterIOConfigurationWindow();
+    ~FilterIOConfigurationWindow() override;
 
     //==============================================================================
     void paint (Graphics& g) override;

extras/AudioPluginHost/Source/Filters/InternalFilters.h

@@ -38,7 +38,7 @@ class InternalPluginFormat   : public AudioPluginFormat
 public:
     //==============================================================================
     InternalPluginFormat();
-    ~InternalPluginFormat() {}
+    ~InternalPluginFormat() override {}
 
     //==============================================================================
     PluginDescription audioInDesc, audioOutDesc, midiInDesc;

extras/AudioPluginHost/Source/UI/GraphEditorPanel.cpp

@@ -197,7 +197,7 @@ struct GraphEditorPanel::FilterComponent   : public Component,
     FilterComponent (const FilterComponent&) = delete;
     FilterComponent& operator= (const FilterComponent&) = delete;
 
-    ~FilterComponent()
+    ~FilterComponent() override
     {
         if (auto f = graph.graph.getNodeForId (pluginID))
         {
@@ -812,7 +812,7 @@ void GraphEditorPanel::updateComponents()
 
     for (auto* f : graph.graph.getNodes())
     {
-        if (getComponentForFilter (f->nodeID) == 0)
+        if (getComponentForFilter (f->nodeID) == nullptr)
         {
             auto* comp = nodes.add (new FilterComponent (*this, f->nodeID));
             addAndMakeVisible (comp);
@@ -822,7 +822,7 @@ void GraphEditorPanel::updateComponents()
 
     for (auto& c : graph.graph.getConnections())
     {
-        if (getComponentForConnection (c) == 0)
+        if (getComponentForConnection (c) == nullptr)
         {
             auto* comp = connectors.add (new ConnectorComponent (*this));
             addAndMakeVisible (comp);
@@ -844,8 +844,8 @@ void GraphEditorPanel::showPopupMenu (Point<int> mousePos)
         menu->showMenuAsync ({},
                              ModalCallbackFunction::create ([this, mousePos] (int r)
                                                             {
-                                                                if (auto* mainWindow = findParentComponentOfClass<MainHostWindow>())
-                                                                    if (auto* desc = mainWindow->getChosenType (r))
+                                                                if (auto* mainWin = findParentComponentOfClass<MainHostWindow>())
+                                                                    if (auto* desc = mainWin->getChosenType (r))
                                                                         createNewPlugin (*desc, mousePos);
                                                             }));
     }

extras/AudioPluginHost/Source/UI/GraphEditorPanel.h

@@ -40,7 +40,7 @@ class GraphEditorPanel   : public Component,
 {
 public:
     GraphEditorPanel (FilterGraph& graph);
-    ~GraphEditorPanel();
+    ~GraphEditorPanel() override;
 
     void createNewPlugin (const PluginDescription&, Point<int> position);
 
@@ -107,7 +107,7 @@ public:
                             AudioDeviceManager& deviceManager,
                             KnownPluginList& pluginList);
 
-    ~GraphDocumentComponent();
+    ~GraphDocumentComponent() override;
 
     //==============================================================================
     void createNewPlugin (const PluginDescription&, Point<int> position);

extras/AudioPluginHost/Source/UI/MainHostWindow.cpp

@@ -55,7 +55,7 @@ public:
         setVisible (true);
     }
 
-    ~PluginListWindow()
+    ~PluginListWindow() override
     {
         getAppProperties().getUserSettings()->setValue ("listWindowPos", getWindowStateAsString());
         clearContentComponent();

extras/AudioPluginHost/Source/UI/MainHostWindow.h

@@ -60,7 +60,7 @@ class MainHostWindow    : public DocumentWindow,
 public:
     //==============================================================================
     MainHostWindow();
-    ~MainHostWindow();
+    ~MainHostWindow() override;
 
     //==============================================================================
     void closeButtonPressed() override;

extras/AudioPluginHost/Source/UI/PluginWindow.h

@@ -40,12 +40,12 @@ class FilterDebugWindow : public AudioProcessorEditor,
 {
 public:
     FilterDebugWindow (AudioProcessor& proc)
-        : AudioProcessorEditor (proc), processor (proc)
+        : AudioProcessorEditor (proc), audioProc (proc)
     {
         setSize (500, 200);
         addAndMakeVisible (list);
 
-        for (auto* p : processor.getParameters())
+        for (auto* p : audioProc.getParameters())
             p->addListener (this);
 
         log.add ("Parameter debug log started");
@@ -53,7 +53,7 @@ public:
 
     void parameterValueChanged (int parameterIndex, float newValue) override
     {
-        auto* param = processor.getParameters()[parameterIndex];
+        auto* param = audioProc.getParameters()[parameterIndex];
         auto value = param->getCurrentValueAsText().quoted() + " (" + String (newValue, 4) + ")";
 
         appendToLog ("parameter change", *param, value);
@@ -61,7 +61,7 @@ public:
 
     void parameterGestureChanged (int parameterIndex, bool gestureIsStarting) override
     {
-        auto* param = processor.getParameters()[parameterIndex];
+        auto* param = audioProc.getParameters()[parameterIndex];
         appendToLog ("gesture", *param, gestureIsStarting ? "start" : "end");
     }
 
@@ -120,7 +120,7 @@ private:
     StringArray pendingLogEntries;
     CriticalSection pendingLogLock;
 
-    AudioProcessor& processor;
+    AudioProcessor& audioProc;
 };
 
 //==============================================================================
@@ -170,7 +170,7 @@ public:
         setVisible (true);
     }
 
-    ~PluginWindow()
+    ~PluginWindow() override
     {
         clearContentComponent();
     }
@@ -287,7 +287,7 @@ private:
                 owner.addListener (this);
             }
 
-            ~PropertyComp()
+            ~PropertyComp() override
             {
                 owner.removeListener (this);
             }

modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.h

@@ -40,7 +40,7 @@ class JUCE_API  AudioUnitPluginFormat   : public AudioPluginFormat
 public:
     //==============================================================================
     AudioUnitPluginFormat();
-    ~AudioUnitPluginFormat();
+    ~AudioUnitPluginFormat() override;
 
     //==============================================================================
     String getName() const override                { return "AudioUnit"; }

modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm

@@ -163,7 +163,7 @@ namespace AudioUnitFormatHelpers
                 desc.componentSubType      = stringToOSType (tokens[1]);
                 desc.componentManufacturer = stringToOSType (tokens[2]);
 
-                if (AudioComponent comp = AudioComponentFindNext (0, &desc))
+                if (AudioComponent comp = AudioComponentFindNext (nullptr, &desc))
                 {
                     getNameAndManufacturer (comp, name, manufacturer);
 
@@ -206,17 +206,17 @@ namespace AudioUnitFormatHelpers
 
         const char* const utf8 = fileOrIdentifier.toUTF8();
 
-        if (CFURLRef url = CFURLCreateFromFileSystemRepresentation (0, (const UInt8*) utf8,
+        if (CFURLRef url = CFURLCreateFromFileSystemRepresentation (nullptr, (const UInt8*) utf8,
                                                                     (CFIndex) strlen (utf8), file.isDirectory()))
         {
             CFBundleRef bundleRef = CFBundleCreate (kCFAllocatorDefault, url);
             CFRelease (url);
 
-            if (bundleRef != 0)
+            if (bundleRef != nullptr)
             {
                 CFTypeRef bundleName = CFBundleGetValueForInfoDictionaryKey (bundleRef, CFSTR("CFBundleName"));
 
-                if (bundleName != 0 && CFGetTypeID (bundleName) == CFStringGetTypeID())
+                if (bundleName != nullptr && CFGetTypeID (bundleName) == CFStringGetTypeID())
                     name = String::fromCFString ((CFStringRef) bundleName);
 
                 if (name.isEmpty())
@@ -224,12 +224,12 @@ namespace AudioUnitFormatHelpers
 
                 CFTypeRef versionString = CFBundleGetValueForInfoDictionaryKey (bundleRef, CFSTR("CFBundleVersion"));
 
-                if (versionString != 0 && CFGetTypeID (versionString) == CFStringGetTypeID())
+                if (versionString != nullptr && CFGetTypeID (versionString) == CFStringGetTypeID())
                     version = String::fromCFString ((CFStringRef) versionString);
 
                 CFTypeRef manuString = CFBundleGetValueForInfoDictionaryKey (bundleRef, CFSTR("CFBundleGetInfoString"));
 
-                if (manuString != 0 && CFGetTypeID (manuString) == CFStringGetTypeID())
+                if (manuString != nullptr && CFGetTypeID (manuString) == CFStringGetTypeID())
                     manufacturer = String::fromCFString ((CFStringRef) manuString);
 
                 const ResFileRefNum resFileId = CFBundleOpenBundleResourceMap (bundleRef);
@@ -256,7 +256,7 @@ namespace AudioUnitFormatHelpers
                             desc.componentSubType = types[1];
                             desc.componentManufacturer = types[2];
 
-                            if (AudioComponent comp = AudioComponentFindNext (0, &desc))
+                            if (AudioComponent comp = AudioComponentFindNext (nullptr, &desc))
                                 getNameAndManufacturer (comp, name, manufacturer);
 
                             break;
@@ -506,7 +506,7 @@ public:
           auComponent (AudioComponentInstanceGetComponent (au)),
           audioUnit (au),
         #if JUCE_MAC
-          eventListenerRef (0),
+          eventListenerRef (nullptr),
         #endif
           midiConcatenator (2048)
     {
@@ -529,7 +529,7 @@ public:
         updateSupportedLayouts();
     }
 
-    ~AudioUnitPluginInstance()
+    ~AudioUnitPluginInstance() override
     {
         const ScopedLock sl (lock);
 
@@ -574,10 +574,10 @@ public:
     void cleanup()
     {
        #if JUCE_MAC
-        if (eventListenerRef != 0)
+        if (eventListenerRef != nullptr)
         {
             AUListenerDispose (eventListenerRef);
-            eventListenerRef = 0;
+            eventListenerRef = nullptr;
         }
        #endif
 
@@ -1292,7 +1292,7 @@ public:
 
     void getCurrentProgramStateInformation (MemoryBlock& destData) override
     {
-        CFPropertyListRef propertyList = 0;
+        CFPropertyListRef propertyList = nullptr;
         UInt32 sz = sizeof (CFPropertyListRef);
 
         if (AudioUnitGetProperty (audioUnit,
@@ -1303,7 +1303,7 @@ public:
             CFWriteStreamRef stream = CFWriteStreamCreateWithAllocatedBuffers (kCFAllocatorDefault, kCFAllocatorDefault);
             CFWriteStreamOpen (stream);
 
-            CFIndex bytesWritten = CFPropertyListWriteToStream (propertyList, stream, kCFPropertyListBinaryFormat_v1_0, 0);
+            CFIndex bytesWritten = CFPropertyListWriteToStream (propertyList, stream, kCFPropertyListBinaryFormat_v1_0, nullptr);
             CFWriteStreamClose (stream);
 
             CFDataRef data = (CFDataRef) CFWriteStreamCopyProperty (stream, kCFStreamPropertyDataWritten);
@@ -1330,10 +1330,10 @@ public:
 
         CFPropertyListFormat format = kCFPropertyListBinaryFormat_v1_0;
         CFPropertyListRef propertyList = CFPropertyListCreateFromStream (kCFAllocatorDefault, stream, 0,
-                                                                         kCFPropertyListImmutable, &format, 0);
+                                                                         kCFPropertyListImmutable, &format, nullptr);
         CFRelease (stream);
 
-        if (propertyList != 0)
+        if (propertyList != nullptr)
         {
             AudioUnitSetProperty (audioUnit, kAudioUnitProperty_ClassInfo, kAudioUnitScope_Global,
                                   0, &propertyList, sizeof (propertyList));
@@ -1443,7 +1443,7 @@ public:
                                 auto getClumpName = [this, info]
                                 {
                                     AudioUnitParameterNameInfo clumpNameInfo;
-                                    UInt32 sz = sizeof (clumpNameInfo);
+                                    UInt32 clumpSz = sizeof (clumpNameInfo);
                                     zerostruct (clumpNameInfo);
                                     clumpNameInfo.inID = info.clumpID;
                                     clumpNameInfo.inDesiredLength = (SInt32) 256;
@@ -1453,7 +1453,7 @@ public:
                                                               kAudioUnitScope_Global,
                                                               0,
                                                               &clumpNameInfo,
-                                                              &sz) == noErr)
+                                                              &clumpSz) == noErr)
                                         return String::fromCFString (clumpNameInfo.outName);
 
                                     return String (info.clumpID);
@@ -1606,11 +1606,11 @@ private:
         {
             String lowercaseText (text.toLowerCase());
 
-            for (auto& testText : onStrings)
+            for (auto& testText : auOnStrings)
                 if (lowercaseText == testText)
                     return 1.0f;
 
-            for (auto& testText : offStrings)
+            for (auto& testText : auOffStrings)
                 if (lowercaseText == testText)
                     return 0.0f;
 
@@ -1628,8 +1628,8 @@ private:
         String getLabel() const override                                    { return {}; }
 
         AudioUnitPluginInstance& parent;
-        const StringArray onStrings  { TRANS("on"),  TRANS("yes"), TRANS("true") };
-        const StringArray offStrings { TRANS("off"), TRANS("no"),  TRANS("false") };
+        const StringArray auOnStrings  { TRANS("on"),  TRANS("yes"), TRANS("true") };
+        const StringArray auOffStrings { TRANS("off"), TRANS("no"),  TRANS("false") };
         const StringArray values { TRANS("Off"), TRANS("On") };
 
         bool currentValue = false;
@@ -2262,7 +2262,7 @@ public:
         createView (createGenericViewIfNeeded);
     }
 
-    ~AudioUnitPluginWindowCocoa()
+    ~AudioUnitPluginWindowCocoa() override
     {
         if (wrapper.getView() != nil)
         {
@@ -2340,7 +2340,7 @@ private:
             {
                 NSString* viewClassName = (NSString*) (info->mCocoaAUViewClass[0]);
                 CFStringRef path = CFURLCopyPath (info->mCocoaAUViewBundleLocation);
-                NSString* unescapedPath = (NSString*) CFURLCreateStringByReplacingPercentEscapes (0, path, CFSTR (""));
+                NSString* unescapedPath = (NSString*) CFURLCreateStringByReplacingPercentEscapes (nullptr, path, CFSTR (""));
                 CFRelease (path);
                 NSBundle* viewBundle = [NSBundle bundleWithPath: [unescapedPath autorelease]];
                 Class viewClass = [viewBundle classNamed: viewClassName];
@@ -2662,7 +2662,7 @@ void AudioUnitPluginFormat::createPluginInstance (const PluginDescription& desc,
             return;
         }
 
-        if ((auComponent = AudioComponentFindNext (0, &componentDesc)) == nullptr)
+        if ((auComponent = AudioComponentFindNext (nullptr, &componentDesc)) == nullptr)
         {
             callback (userData, nullptr, errMessage);
             return;
@@ -2761,7 +2761,7 @@ bool AudioUnitPluginFormat::requiresUnblockedMessageThreadDuringCreation (const
            || AudioUnitFormatHelpers::getComponentDescFromFile (desc.fileOrIdentifier, componentDesc,
                                                                 pluginName, version, manufacturer))
     {
-        if (AudioComponent auComp = AudioComponentFindNext (0, &componentDesc))
+        if (AudioComponent auComp = AudioComponentFindNext (nullptr, &componentDesc))
             if (AudioComponentGetDescription (auComp, &componentDesc) == noErr)
                 return ((componentDesc.componentFlags & kAudioComponentFlag_IsV3AudioUnit) != 0);
     }

modules/juce_audio_processors/format_types/juce_VST3Headers.h

@@ -53,6 +53,15 @@
  #if __has_warning("-Wcomma")
   #pragma clang diagnostic ignored "-Wcomma"
  #endif
+ #if __has_warning("-Wzero-as-null-pointer-constant")
+  #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
+ #endif
+ #if __has_warning("-Winconsistent-missing-destructor-override")
+  #pragma clang diagnostic ignored "-Winconsistent-missing-destructor-override"
+ #endif
+ #if __has_warning("-Wcast-align")
+  #pragma clang diagnostic ignored "-Wcast-align"
+ #endif
 #endif
 
 #undef DEVELOPMENT

modules/juce_audio_processors/format_types/juce_VST3PluginFormat.cpp

@@ -66,8 +66,17 @@ static int warnOnFailure (int result) noexcept
     DBG (message);
     return result;
 }
+
+static int warnOnFailureIfImplemented (int result) noexcept
+{
+    if (result != kResultOk && result != kNotImplemented)
+        return warnOnFailure (result);
+
+    return result;
+}
 #else
  #define warnOnFailure(x) x
+ #define warnOnFailureIfImplemented(x) x
 #endif
 
 //==============================================================================
@@ -949,7 +958,7 @@ private:
         const File file (filePath);
         const char* const utf8 = file.getFullPathName().toRawUTF8();
 
-        if (CFURLRef url = CFURLCreateFromFileSystemRepresentation (0, (const UInt8*) utf8, (CFIndex) std::strlen (utf8), file.isDirectory()))
+        if (CFURLRef url = CFURLCreateFromFileSystemRepresentation (nullptr, (const UInt8*) utf8, (CFIndex) std::strlen (utf8), file.isDirectory()))
         {
             bundleRef = CFBundleCreate (kCFAllocatorDefault, url);
             CFRelease (url);
@@ -1131,7 +1140,7 @@ struct VST3PluginWindow : public AudioProcessorEditor,
         }
     }
 
-    ~VST3PluginWindow()
+    ~VST3PluginWindow() override
     {
         warnOnFailure (view->removed());
         warnOnFailure (view->setFrame (nullptr));
@@ -1716,7 +1725,7 @@ public:
         holder->host->setPlugin (this);
     }
 
-    ~VST3PluginInstance()
+    ~VST3PluginInstance() override
     {
         jassert (getActiveEditor() == nullptr); // You must delete any editors before deleting the plugin instance!
 
@@ -1886,10 +1895,7 @@ public:
         cachedBusLayouts = getBusesLayout();
 
         warnOnFailure (holder->component->setActive (true));
-        auto result = processor->setProcessing (true);
-
-        if (result != kResultOk && result != kNotImplemented)
-            warnOnFailure (result);
+        warnOnFailureIfImplemented (processor->setProcessing (true));
 
         isActive = true;
     }
@@ -1904,12 +1910,7 @@ public:
         setStateForAllMidiBuses (false);
 
         if (processor != nullptr)
-        {
-            auto result = processor->setProcessing (false);
-
-            if (result != kResultOk && result != kNotImplemented)
-                warnOnFailure (result);
-        }
+            warnOnFailureIfImplemented (processor->setProcessing (false));
 
         if (holder->component != nullptr)
             warnOnFailure (holder->component->setActive (false));
@@ -2626,15 +2627,8 @@ private:
         Steinberg::MemoryStream stream;
 
         if (holder->component->getState (&stream) == kResultTrue)
-        {
             if (stream.seek (0, Steinberg::IBStream::kIBSeekSet, nullptr) == kResultTrue)
-            {
-                auto result = editController->setComponentState (&stream);
-
-                if (result != kResultOk && result != kNotImplemented)
-                    warnOnFailure (result);
-            }
-        }
+                warnOnFailureIfImplemented (editController->setComponentState (&stream));
     }
 
     void grabInformationObjects()

modules/juce_audio_processors/format_types/juce_VST3PluginFormat.h

@@ -41,7 +41,7 @@ public:
     VST3PluginFormat();
 
     /** Destructor */
-    ~VST3PluginFormat();
+    ~VST3PluginFormat() override;
 
     //==============================================================================
     /** Attempts to reload a VST3 plugin's state from some preset file data.

modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp

@@ -36,6 +36,12 @@
  #define __cdecl
 #endif
 
+#if JUCE_CLANG
+ #if __has_warning("-Wzero-as-null-pointer-constant")
+  #pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
+ #endif
+#endif
+
 #define VST_FORCE_DEPRECATED 0
 #define JUCE_VSTINTERFACE_H_INCLUDED 1
 
@@ -207,7 +213,7 @@ namespace
    #if JUCE_MAC
     static bool makeFSRefFromPath (FSRef* destFSRef, const String& path)
     {
-        return FSPathMakeRef (reinterpret_cast<const UInt8*> (path.toRawUTF8()), destFSRef, 0) == noErr;
+        return FSPathMakeRef (reinterpret_cast<const UInt8*> (path.toRawUTF8()), destFSRef, nullptr) == noErr;
     }
    #endif
 }
@@ -630,7 +636,7 @@ struct ModuleHandle    : public ReferenceCountedObject
        #elif JUCE_MAC
         FSRef ref;
         makeFSRefFromPath (&ref, f.getParentDirectory().getFullPathName());
-        FSGetCatalogInfo (&ref, kFSCatInfoNone, 0, 0, &parentDirFSSpec, 0);
+        FSGetCatalogInfo (&ref, kFSCatInfoNone, nullptr, nullptr, &parentDirFSSpec, nullptr);
        #endif
     }
 
@@ -730,13 +736,13 @@ struct ModuleHandle    : public ReferenceCountedObject
         {
             auto* utf8 = file.getFullPathName().toRawUTF8();
 
-            if (CFURLRef url = CFURLCreateFromFileSystemRepresentation (0, (const UInt8*) utf8,
+            if (CFURLRef url = CFURLCreateFromFileSystemRepresentation (nullptr, (const UInt8*) utf8,
                                                                         (CFIndex) strlen (utf8), file.isDirectory()))
             {
                 bundleRef = CFBundleCreate (kCFAllocatorDefault, url);
                 CFRelease (url);
 
-                if (bundleRef != 0)
+                if (bundleRef != nullptr)
                 {
                     if (CFBundleLoadExecutable (bundleRef))
                     {
@@ -785,7 +791,7 @@ struct ModuleHandle    : public ReferenceCountedObject
                     {
                         CFBundleUnloadExecutable (bundleRef);
                         CFRelease (bundleRef);
-                        bundleRef = 0;
+                        bundleRef = nullptr;
                     }
                 }
             }
@@ -796,7 +802,7 @@ struct ModuleHandle    : public ReferenceCountedObject
 
     void close()
     {
-        if (bundleRef != 0)
+        if (bundleRef != nullptr)
         {
            #if JUCE_MAC
             CFBundleCloseBundleResourceMap (bundleRef, resFileId);
@@ -812,7 +818,7 @@ struct ModuleHandle    : public ReferenceCountedObject
 
     void closeEffect (Vst2::AEffect* eff)
     {
-        eff->dispatcher (eff, Vst2::effClose, 0, 0, 0, 0);
+        eff->dispatcher (eff, Vst2::effClose, 0, 0, nullptr, 0);
     }
 
   #endif
@@ -1006,7 +1012,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
             Array<String> shortParamNames;
             float defaultValue = 0;
             String label;
-            bool isAutomatable = dispatch (Vst2::effCanBeAutomated, i, 0, 0, 0) != 0;
+            bool isAutomatable = dispatch (Vst2::effCanBeAutomated, i, 0, nullptr, 0) != 0;
             bool isDiscrete = false;
             int numSteps = AudioProcessor::getDefaultNumParameterSteps();
             bool isBoolSwitch = false;
@@ -1081,7 +1087,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
         setRateAndBufferSizeDetails (sampleRateToUse, blockSizeToUse);
     }
 
-    ~VSTPluginInstance()
+    ~VSTPluginInstance() override
     {
         if (vstEffect != nullptr && vstEffect->magic == 0x56737450 /* 'VstP' */)
         {
@@ -1143,14 +1149,14 @@ struct VSTPluginInstance     : public AudioPluginInstance,
         {
             newEffect->resvd2 = 0;
 
-            newEffect->dispatcher (newEffect, Vst2::effIdentify, 0, 0, 0, 0);
+            newEffect->dispatcher (newEffect, Vst2::effIdentify, 0, 0, nullptr, 0);
 
             auto blockSize = jmax (32, initialBlockSize);
 
-            newEffect->dispatcher (newEffect, Vst2::effSetSampleRate, 0, 0, 0, static_cast<float> (initialSampleRate));
-            newEffect->dispatcher (newEffect, Vst2::effSetBlockSize,  0, blockSize, 0, 0);
+            newEffect->dispatcher (newEffect, Vst2::effSetSampleRate, 0, 0, nullptr, static_cast<float> (initialSampleRate));
+            newEffect->dispatcher (newEffect, Vst2::effSetBlockSize,  0, blockSize, nullptr, 0);
 
-            newEffect->dispatcher (newEffect, Vst2::effOpen, 0, 0, 0, 0);
+            newEffect->dispatcher (newEffect, Vst2::effOpen, 0, 0, nullptr, 0);
             BusesProperties ioConfig = queryBusIO (newEffect);
 
             return new VSTPluginInstance (newModule, ioConfig, newEffect, initialSampleRate, blockSize);
@@ -1223,25 +1229,25 @@ struct VSTPluginInstance     : public AudioPluginInstance,
 
         setRateAndBufferSizeDetails (initialSampleRate, initialBlockSize);
 
-        dispatch (Vst2::effIdentify, 0, 0, 0, 0);
+        dispatch (Vst2::effIdentify, 0, 0, nullptr, 0);
 
         if (getSampleRate() > 0)
-            dispatch (Vst2::effSetSampleRate, 0, 0, 0, (float) getSampleRate());
+            dispatch (Vst2::effSetSampleRate, 0, 0, nullptr, (float) getSampleRate());
 
         if (getBlockSize() > 0)
-            dispatch (Vst2::effSetBlockSize, 0, jmax (32, getBlockSize()), 0, 0);
+            dispatch (Vst2::effSetBlockSize, 0, jmax (32, getBlockSize()), nullptr, 0);
 
-        dispatch (Vst2::effOpen, 0, 0, 0, 0);
+        dispatch (Vst2::effOpen, 0, 0, nullptr, 0);
 
         setRateAndBufferSizeDetails (getSampleRate(), getBlockSize());
 
         if (getNumPrograms() > 1)
             setCurrentProgram (0);
         else
-            dispatch (Vst2::effSetProgram, 0, 0, 0, 0);
+            dispatch (Vst2::effSetProgram, 0, 0, nullptr, 0);
 
-        for (int i = vstEffect->numInputs;  --i >= 0;)  dispatch (Vst2::effConnectInput,  i, 1, 0, 0);
-        for (int i = vstEffect->numOutputs; --i >= 0;)  dispatch (Vst2::effConnectOutput, i, 1, 0, 0);
+        for (int i = vstEffect->numInputs;  --i >= 0;)  dispatch (Vst2::effConnectInput,  i, 1, nullptr, 0);
+        for (int i = vstEffect->numOutputs; --i >= 0;)  dispatch (Vst2::effConnectOutput, i, 1, nullptr, 0);
 
         if (getVstCategory() != Vst2::kPlugCategShell) // (workaround for Waves 5 plugins which crash during this call)
             updateStoredProgramNames();
@@ -1293,7 +1299,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
         if ((vstEffect->flags & Vst2::effFlagsNoSoundInStop) != 0)
             return 0.0;
 
-        auto tailSize = dispatch (Vst2::effGetTailSize, 0, 0, 0, 0);
+        auto tailSize = dispatch (Vst2::effGetTailSize, 0, 0, nullptr, 0);
         auto sampleRate = getSampleRate();
 
         // remain backward compatible with old JUCE plug-ins: anything larger
@@ -1313,7 +1319,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
     bool producesMidi() const override   { return pluginCanDo ("sendVstMidiEvent") > 0; }
     bool supportsMPE() const override    { return pluginCanDo ("MPE") > 0; }
 
-    Vst2::VstPlugCategory getVstCategory() const noexcept     { return (Vst2::VstPlugCategory) dispatch (Vst2::effGetPlugCategory, 0, 0, 0, 0); }
+    Vst2::VstPlugCategory getVstCategory() const noexcept     { return (Vst2::VstPlugCategory) dispatch (Vst2::effGetPlugCategory, 0, 0, nullptr, 0); }
 
     int pluginCanDo (const char* text) const     { return (int) dispatch (Vst2::effCanDo, 0, 0, (void*) text,  0); }
 
@@ -1355,15 +1361,15 @@ struct VSTPluginInstance     : public AudioPluginInstance,
 
             incomingMidi.clear();
 
-            dispatch (Vst2::effSetSampleRate, 0, 0, 0, (float) rate);
-            dispatch (Vst2::effSetBlockSize, 0, jmax (16, samplesPerBlockExpected), 0, 0);
+            dispatch (Vst2::effSetSampleRate, 0, 0, nullptr, (float) rate);
+            dispatch (Vst2::effSetBlockSize, 0, jmax (16, samplesPerBlockExpected), nullptr, 0);
 
             if (supportsDoublePrecisionProcessing())
             {
                 int32 vstPrecision = isUsingDoublePrecision() ? Vst2::kVstProcessPrecision64
                                                               : Vst2::kVstProcessPrecision32;
 
-                dispatch (Vst2::effSetProcessPrecision, 0, (pointer_sized_int) vstPrecision, 0, 0);
+                dispatch (Vst2::effSetProcessPrecision, 0, (pointer_sized_int) vstPrecision, nullptr, 0);
             }
 
             auto maxChannels = jmax (1, jmax (vstEffect->numInputs, vstEffect->numOutputs));
@@ -1390,7 +1396,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
                 }
             }
 
-            dispatch (Vst2::effStartProcess, 0, 0, 0, 0);
+            dispatch (Vst2::effStartProcess, 0, 0, nullptr, 0);
 
             setLatencySamples (vstEffect->initialDelay);
         }
@@ -1400,7 +1406,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
     {
         if (initialised)
         {
-            dispatch (Vst2::effStopProcess, 0, 0, 0, 0);
+            dispatch (Vst2::effStopProcess, 0, 0, nullptr, 0);
             setPower (false);
         }
 
@@ -1544,12 +1550,12 @@ struct VSTPluginInstance     : public AudioPluginInstance,
     int getNumPrograms() override          { return vstEffect != nullptr ? jmax (0, vstEffect->numPrograms) : 0; }
 
     // NB: some plugs return negative numbers from this function.
-    int getCurrentProgram() override       { return (int) dispatch (Vst2::effGetProgram, 0, 0, 0, 0); }
+    int getCurrentProgram() override       { return (int) dispatch (Vst2::effGetProgram, 0, 0, nullptr, 0); }
 
     void setCurrentProgram (int newIndex) override
     {
         if (getNumPrograms() > 0 && newIndex != getCurrentProgram())
-            dispatch (Vst2::effSetProgram, 0, jlimit (0, getNumPrograms() - 1, newIndex), 0, 0);
+            dispatch (Vst2::effSetProgram, 0, jlimit (0, getNumPrograms() - 1, newIndex), nullptr, 0);
     }
 
     const String getProgramName (int index) override
@@ -1594,7 +1600,7 @@ struct VSTPluginInstance     : public AudioPluginInstance,
     //==============================================================================
     void timerCallback() override
     {
-        if (dispatch (Vst2::effIdle, 0, 0, 0, 0) == 0)
+        if (dispatch (Vst2::effIdle, 0, 0, nullptr, 0) == 0)
             stopTimer();
     }
 
@@ -1979,8 +1985,8 @@ private:
     {
         VST2BypassParameter (VSTPluginInstance& effectToUse)
             : parent (effectToUse),
-              onStrings (TRANS("on"), TRANS("yes"), TRANS("true")),
-              offStrings (TRANS("off"), TRANS("no"), TRANS("false")),
+              vstOnStrings (TRANS("on"), TRANS("yes"), TRANS("true")),
+              vstOffStrings (TRANS("off"), TRANS("no"), TRANS("false")),
               values (TRANS("Off"), TRANS("On"))
         {
         }
@@ -1997,11 +2003,11 @@ private:
         {
             String lowercaseText (text.toLowerCase());
 
-            for (auto& testText : onStrings)
+            for (auto& testText : vstOnStrings)
                 if (lowercaseText == testText)
                     return 1.0f;
 
-            for (auto& testText : offStrings)
+            for (auto& testText : vstOffStrings)
                 if (lowercaseText == testText)
                     return 0.0f;
 
@@ -2021,7 +2027,7 @@ private:
 
         VSTPluginInstance& parent;
         bool currentValue = false;
-        StringArray onStrings, offStrings, values;
+        StringArray vstOnStrings, vstOffStrings, values;
     };
 
     //==============================================================================
@@ -2098,7 +2104,7 @@ private:
 
            #if JUCE_MAC
             if (getActiveEditor() != nullptr)
-                dispatch (Vst2::effEditIdle, 0, 0, 0, 0);
+                dispatch (Vst2::effEditIdle, 0, 0, nullptr, 0);
            #endif
 
             Timer::callPendingTimersSynchronously();
@@ -2629,7 +2635,7 @@ private:
 
     String getVersion() const
     {
-        auto v = (unsigned int) dispatch (Vst2::effGetVendorVersion, 0, 0, 0, 0);
+        auto v = (unsigned int) dispatch (Vst2::effGetVendorVersion, 0, 0, nullptr, 0);
 
         String s;
 
@@ -2702,7 +2708,7 @@ private:
 
     void setPower (const bool on)
     {
-        dispatch (Vst2::effMainsChanged, 0, on ? 1 : 0, 0, 0);
+        dispatch (Vst2::effMainsChanged, 0, on ? 1 : 0, nullptr, 0);
         isPowerOn = on;
     }
 
@@ -2775,7 +2781,7 @@ public:
         setVisible (true);
     }
 
-    ~VSTPluginWindow()
+    ~VSTPluginWindow() override
     {
         closePluginWindow();
 
@@ -2958,7 +2964,7 @@ public:
             if (! reentrantGuard)
             {
                 reentrantGuard = true;
-                plugin.dispatch (Vst2::effEditIdle, 0, 0, 0, 0);
+                plugin.dispatch (Vst2::effEditIdle, 0, 0, nullptr, 0);
                 reentrantGuard = false;
             }
 
@@ -2990,7 +2996,7 @@ public:
         activeVSTWindows.add (this);
 
        #if JUCE_MAC
-        dispatch (Vst2::effEditTop, 0, 0, 0, 0);
+        dispatch (Vst2::effEditTop, 0, 0, nullptr, 0);
        #endif
     }
 
@@ -3034,7 +3040,7 @@ private:
    #if JUCE_MAC
     void openPluginWindow (void* parentWindow)
     {
-        if (isOpen || parentWindow == 0)
+        if (isOpen || parentWindow == nullptr)
             return;
 
         isOpen = true;
@@ -3045,10 +3051,10 @@ private:
 
         // do this before and after like in the steinberg example
         dispatch (Vst2::effEditGetRect, 0, 0, &rect, 0);
-        dispatch (Vst2::effGetProgram, 0, 0, 0, 0); // also in steinberg code
+        dispatch (Vst2::effGetProgram, 0, 0, nullptr, 0); // also in steinberg code
 
         // Install keyboard hooks
-        pluginWantsKeys = (dispatch (Vst2::effKeysRequired, 0, 0, 0, 0) == 0);
+        pluginWantsKeys = (dispatch (Vst2::effKeysRequired, 0, 0, nullptr, 0) == 0);
 
         // double-check it's not too tiny
         int w = 250, h = 150;
@@ -3224,7 +3230,7 @@ private:
 
             JUCE_VST_LOG ("Closing VST UI: " + plugin.getName());
             isOpen = false;
-            dispatch (Vst2::effEditClose, 0, 0, 0, 0);
+            dispatch (Vst2::effEditClose, 0, 0, nullptr, 0);
             stopTimer();
 
            #if JUCE_WINDOWS
@@ -3513,7 +3519,7 @@ void VSTPluginFormat::findAllTypesForFile (OwnedArray<PluginDescription>& result
         // Normal plugin...
         results.add (new PluginDescription (desc));
 
-        instance->dispatch (Vst2::effOpen, 0, 0, 0, 0);
+        instance->dispatch (Vst2::effOpen, 0, 0, nullptr, 0);
     }
     else
     {

modules/juce_audio_processors/format_types/juce_VSTPluginFormat.h

@@ -40,7 +40,7 @@ class JUCE_API  VSTPluginFormat   : public AudioPluginFormat
 public:
     //==============================================================================
     VSTPluginFormat();
-    ~VSTPluginFormat();
+    ~VSTPluginFormat() override;
 
     //==============================================================================
     /** Attempts to retrieve the VSTXML data from a plugin.

modules/juce_audio_processors/juce_audio_processors.cpp

@@ -133,6 +133,9 @@ struct AutoResizingNSViewComponentWithParent  : public AutoResizingNSViewCompone
 
 #if JUCE_CLANG
  #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ #if __has_warning("-Wcast-align")
+  #pragma clang diagnostic ignored "-Wcast-align"
+ #endif
 #endif
 
 #include "format/juce_AudioPluginFormat.cpp"

modules/juce_core/native/juce_mac_Network.mm

@@ -692,7 +692,7 @@ public:
         DelegateClass::setState (delegate, this);
     }
 
-    ~URLConnectionState()
+    ~URLConnectionState() override
     {
         stop();
 

modules/juce_opengl/opengl/juce_OpenGLContext.cpp

@@ -85,7 +85,7 @@ public:
             nativeContext.reset();
     }
 
-    ~CachedImage()
+    ~CachedImage() override
     {
         stop();
     }
@@ -671,7 +671,7 @@ public:
             attach();
     }
 
-    ~Attachment()
+    ~Attachment() override
     {
         detach();
     }