diff --git a/modules/juce_audio_devices/native/juce_android_Audio.cpp b/modules/juce_audio_devices/native/juce_android_Audio.cpp
index 31d4f62545..e21f9468d6 100644
--- a/modules/juce_audio_devices/native/juce_android_Audio.cpp
+++ b/modules/juce_audio_devices/native/juce_android_Audio.cpp
@@ -77,8 +77,8 @@ public:
           numClientInputChannels (0), numDeviceInputChannels (0), numDeviceInputChannelsAvailable (2),
           numClientOutputChannels (0), numDeviceOutputChannels (0),
           actualBufferSize (0), isRunning (false),
-          outputChannelBuffer (1, 1),
-          inputChannelBuffer (1, 1)
+          inputChannelBuffer (1, 1),
+          outputChannelBuffer (1, 1)
     {
         JNIEnv* env = getEnv();
         sampleRate = env->CallStaticIntMethod (AudioTrack, AudioTrack.getNativeOutputSampleRate, MODE_STREAM);
diff --git a/modules/juce_core/native/juce_android_Files.cpp b/modules/juce_core/native/juce_android_Files.cpp
index 15f90886d7..d5ed94500f 100644
--- a/modules/juce_core/native/juce_android_Files.cpp
+++ b/modules/juce_core/native/juce_android_Files.cpp
@@ -234,6 +234,7 @@ bool Process::openDocument (const String& fileName, const String& parameters)
 {
     const LocalRef<jstring> t (javaString (fileName));
     android.activity.callVoidMethod (JuceAppActivity.launchURL, t.get());
+    return true;
 }
 
 void File::revealToUser() const
diff --git a/modules/juce_core/native/juce_android_Misc.cpp b/modules/juce_core/native/juce_android_Misc.cpp
index b9d5f733ca..d26adc185e 100644
--- a/modules/juce_core/native/juce_android_Misc.cpp
+++ b/modules/juce_core/native/juce_android_Misc.cpp
@@ -28,5 +28,5 @@
 
 void Logger::outputDebugString (const String& text)
 {
-    __android_log_print (ANDROID_LOG_INFO, "JUCE", text.toUTF8());
+    __android_log_print (ANDROID_LOG_INFO, "JUCE", "%s", text.toUTF8().getAddress());
 }
diff --git a/modules/juce_core/network/juce_IPAddress.cpp b/modules/juce_core/network/juce_IPAddress.cpp
index 0a7bd41f76..5fc1b00dc3 100644
--- a/modules/juce_core/network/juce_IPAddress.cpp
+++ b/modules/juce_core/network/juce_IPAddress.cpp
@@ -126,7 +126,7 @@ static void findIPAddresses (int sock, Array<IPAddress>& result)
         cfg.ifc_buf += IFNAMSIZ + cfg.ifc_req->ifr_addr.sa_len;
     }
    #else
-    for (int i = 0; i < cfg.ifc_len / sizeof (struct ifreq); ++i)
+    for (size_t i = 0; i < cfg.ifc_len / sizeof (struct ifreq); ++i)
     {
         const ifreq& item = cfg.ifc_req[i];
 
diff --git a/modules/juce_core/threads/juce_Thread.cpp b/modules/juce_core/threads/juce_Thread.cpp
index 20d25398d8..8f8709d091 100644
--- a/modules/juce_core/threads/juce_Thread.cpp
+++ b/modules/juce_core/threads/juce_Thread.cpp
@@ -65,10 +65,15 @@ struct CurrentThreadHolder   : public ReferenceCountedObject
 
 static char currentThreadHolderLock [sizeof (SpinLock)]; // (statically initialised to zeros).
 
+static SpinLock* castToSpinLockWithoutAliasingWarning (void* s)
+{
+    return static_cast<SpinLock*> (s);
+}
+
 static CurrentThreadHolder::Ptr getCurrentThreadHolder()
 {
     static CurrentThreadHolder::Ptr currentThreadHolder;
-    SpinLock::ScopedLockType lock (*reinterpret_cast <SpinLock*> (currentThreadHolderLock));
+    SpinLock::ScopedLockType lock (*castToSpinLockWithoutAliasingWarning (currentThreadHolderLock));
 
     if (currentThreadHolder == nullptr)
         currentThreadHolder = new CurrentThreadHolder();
diff --git a/modules/juce_gui_basics/native/juce_android_Windowing.cpp b/modules/juce_gui_basics/native/juce_android_Windowing.cpp
index 060f322eda..3a0b057ef6 100644
--- a/modules/juce_gui_basics/native/juce_android_Windowing.cpp
+++ b/modules/juce_gui_basics/native/juce_android_Windowing.cpp
@@ -697,7 +697,6 @@ JUCE_JNI_CALLBACK (JUCE_ANDROID_ACTIVITY_CLASSNAME, setScreenSize, void, (JNIEnv
                                                                           jint screenWidth, jint screenHeight,
                                                                           jint dpi))
 {
-    const bool isSystemInitialised = android.screenWidth != 0;
     android.screenWidth = screenWidth;
     android.screenHeight = screenHeight;
     android.dpi = dpi;
diff --git a/modules/juce_gui_extra/misc/juce_ColourSelector.cpp b/modules/juce_gui_extra/misc/juce_ColourSelector.cpp
index 4f6f3f2b58..04a68f182b 100644
--- a/modules/juce_gui_extra/misc/juce_ColourSelector.cpp
+++ b/modules/juce_gui_extra/misc/juce_ColourSelector.cpp
@@ -193,8 +193,8 @@ private:
 class ColourSelector::HueSelectorComp  : public Component
 {
 public:
-    HueSelectorComp (ColourSelector& cs, float& hue, float& sat, float& val, const int edgeSize)
-        : owner (cs), h (hue), s (sat), v (val), edge (edgeSize)
+    HueSelectorComp (ColourSelector& cs, float& hue, const int edgeSize)
+        : owner (cs), h (hue), edge (edgeSize)
     {
         addAndMakeVisible (&marker);
     }
@@ -236,8 +236,6 @@ public:
 private:
     ColourSelector& owner;
     float& h;
-    float& s;
-    float& v;
     HueSelectorMarker marker;
     const int edge;
 
@@ -332,7 +330,7 @@ ColourSelector::ColourSelector (const int sectionsToShow, const int edge, const
     if ((flags & showColourspace) != 0)
     {
         addAndMakeVisible (colourSpace = new ColourSpaceView (*this, h, s, v, gapAroundColourSpaceComponent));
-        addAndMakeVisible (hueSelector = new HueSelectorComp (*this, h, s, v, gapAroundColourSpaceComponent));
+        addAndMakeVisible (hueSelector = new HueSelectorComp (*this, h,  gapAroundColourSpaceComponent));
     }
 
     update();