diff --git a/extras/UnitTestRunner/Builds/VisualStudio2015/UnitTestRunner_ConsoleApp.vcxproj b/extras/UnitTestRunner/Builds/VisualStudio2015/UnitTestRunner_ConsoleApp.vcxproj
index 7f99820fd9..b0c8da31b8 100644
--- a/extras/UnitTestRunner/Builds/VisualStudio2015/UnitTestRunner_ConsoleApp.vcxproj
+++ b/extras/UnitTestRunner/Builds/VisualStudio2015/UnitTestRunner_ConsoleApp.vcxproj
@@ -30,7 +30,6 @@
                  Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v140</PlatformToolset>
     <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
@@ -81,6 +80,7 @@
       <WarningLevel>Level4</WarningLevel>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
+      <TreatWarningAsError>true</TreatWarningAsError>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -122,6 +122,7 @@
       <WarningLevel>Level4</WarningLevel>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
+      <TreatWarningAsError>true</TreatWarningAsError>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/extras/UnitTestRunner/Builds/VisualStudio2017/UnitTestRunner_ConsoleApp.vcxproj b/extras/UnitTestRunner/Builds/VisualStudio2017/UnitTestRunner_ConsoleApp.vcxproj
index 9883fac5b9..8871a3a112 100644
--- a/extras/UnitTestRunner/Builds/VisualStudio2017/UnitTestRunner_ConsoleApp.vcxproj
+++ b/extras/UnitTestRunner/Builds/VisualStudio2017/UnitTestRunner_ConsoleApp.vcxproj
@@ -31,7 +31,6 @@
                  Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseOfMfc>false</UseOfMfc>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v141</PlatformToolset>
     <PlatformToolset>v141</PlatformToolset>
     <WindowsTargetPlatformVersion>10.0.15063.0</WindowsTargetPlatformVersion>
@@ -83,6 +82,7 @@
       <WarningLevel>Level4</WarningLevel>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
+      <TreatWarningAsError>true</TreatWarningAsError>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -122,6 +122,7 @@
       <WarningLevel>Level4</WarningLevel>
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
+      <TreatWarningAsError>true</TreatWarningAsError>
     </ClCompile>
     <ResourceCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/extras/UnitTestRunner/Source/Main.cpp b/extras/UnitTestRunner/Source/Main.cpp
index 4f25bf664c..52c20bb464 100644
--- a/extras/UnitTestRunner/Source/Main.cpp
+++ b/extras/UnitTestRunner/Source/Main.cpp
@@ -45,16 +45,20 @@ class ConsoleUnitTestRunner : public UnitTestRunner
 };
 
 //==============================================================================
-int main (int argc, char* argv[])
+int main()
 {
-    ignoreUnused (argc, argv);
-
-    ScopedPointer<ConsoleLogger> logger;
-    Logger::setCurrentLogger (logger);
+   #if ! JUCE_DEBUG
+    ConsoleLogger logger;
+    Logger::setCurrentLogger (&logger);
+   #endif
 
     ConsoleUnitTestRunner runner;
     runner.runAllTests();
 
+   #if ! JUCE_DEBUG
+    Logger::setCurrentLogger (nullptr);
+   #endif
+
     for (int i = 0; i < runner.getNumResults(); ++i)
         if (runner.getResult(i)->failures > 0)
             return 1;
diff --git a/extras/UnitTestRunner/UnitTestRunner.jucer b/extras/UnitTestRunner/UnitTestRunner.jucer
index 25b97af75a..21b86ff3d8 100644
--- a/extras/UnitTestRunner/UnitTestRunner.jucer
+++ b/extras/UnitTestRunner/UnitTestRunner.jucer
@@ -69,9 +69,11 @@
     <VS2015 targetFolder="Builds/VisualStudio2015">
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" winWarningLevel="4" generateManifest="1" winArchitecture="32-bit"
-                       isDebug="1" optimisation="1" targetName="UnitTestRunner"/>
+                       isDebug="1" optimisation="1" targetName="UnitTestRunner" warningsAreErrors="1"
+                       wholeProgramOptimisation="1"/>
         <CONFIGURATION name="Release" winWarningLevel="4" generateManifest="1" winArchitecture="32-bit"
-                       isDebug="0" optimisation="3" targetName="UnitTestRunner"/>
+                       isDebug="0" optimisation="3" targetName="UnitTestRunner" wholeProgramOptimisation="1"
+                       warningsAreErrors="1"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_video" path="../../modules"/>
@@ -96,9 +98,11 @@
     <VS2017 targetFolder="Builds/VisualStudio2017">
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" winWarningLevel="4" generateManifest="1" winArchitecture="x64"
-                       isDebug="1" optimisation="1" targetName="UnitTestRunner"/>
+                       isDebug="1" optimisation="1" targetName="UnitTestRunner" warningsAreErrors="1"
+                       wholeProgramOptimisation="1"/>
         <CONFIGURATION name="Release" winWarningLevel="4" generateManifest="1" winArchitecture="x64"
-                       isDebug="0" optimisation="3" targetName="UnitTestRunner"/>
+                       isDebug="0" optimisation="3" targetName="UnitTestRunner" warningsAreErrors="1"
+                       wholeProgramOptimisation="1"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_video" path="../../modules"/>
diff --git a/modules/juce_blocks_basics/littlefoot/juce_LittleFootCompiler.h b/modules/juce_blocks_basics/littlefoot/juce_LittleFootCompiler.h
index 7dea7f03c5..f62e07a54b 100644
--- a/modules/juce_blocks_basics/littlefoot/juce_LittleFootCompiler.h
+++ b/modules/juce_blocks_basics/littlefoot/juce_LittleFootCompiler.h
@@ -20,6 +20,11 @@
   ==============================================================================
 */
 
+#if JUCE_MSVC
+ #pragma warning (push)
+ #pragma warning (disable: 4702)
+#endif
+
 namespace littlefoot
 {
 
@@ -2172,3 +2177,7 @@ private:
 };
 
 }
+
+#if JUCE_MSVC
+ #pragma warning (pop)
+#endif
diff --git a/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp b/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp
index dce701b0b3..71bd682026 100644
--- a/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp
+++ b/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp
@@ -1695,7 +1695,7 @@ struct PhysicalTopologySource::Internal
             }
         }
 
-        bool setName (const juce::String& name) override
+        bool setName (const juce::String& newName) override
         {
             auto index = getDeviceIndex();
 
@@ -1704,7 +1704,7 @@ struct PhysicalTopologySource::Internal
                 BlocksProtocol::HostPacketBuilder<128> p;
                 p.writePacketSysexHeaderBytes ((BlocksProtocol::TopologyIndex) index);
 
-                if (p.addSetBlockName (name))
+                if (p.addSetBlockName (newName))
                 {
                     p.writePacketSysexFooter();