diff --git a/Subtrees/beast/modules/beast_core/native/beast_android_Files.cpp b/Subtrees/beast/modules/beast_core/native/beast_android_Files.cpp
index 5e3972347b..5a6c56674a 100644
--- a/Subtrees/beast/modules/beast_core/native/beast_android_Files.cpp
+++ b/Subtrees/beast/modules/beast_core/native/beast_android_Files.cpp
@@ -227,6 +227,7 @@ bool Process::openDocument (const String& fileName, const String& parameters)
 {
     const LocalRef<jstring> t (javaString (fileName));
     android.activity.callVoidMethod (BeastAppActivity.launchURL, t.get());
+    return true;
 }
 
 void File::revealToUser() const
diff --git a/Subtrees/beast/modules/beast_core/native/beast_android_Misc.cpp b/Subtrees/beast/modules/beast_core/native/beast_android_Misc.cpp
index d2d236a180..275fd6e114 100644
--- a/Subtrees/beast/modules/beast_core/native/beast_android_Misc.cpp
+++ b/Subtrees/beast/modules/beast_core/native/beast_android_Misc.cpp
@@ -23,5 +23,5 @@
 
 void Logger::outputDebugString (const String& text)
 {
-    __android_log_print (ANDROID_LOG_INFO, "BEAST", text.toUTF8());
+    __android_log_print (ANDROID_LOG_INFO, "BEAST", "%", text.toUTF8().getAddress());
 }
diff --git a/Subtrees/beast/modules/beast_core/network/beast_IPAddress.cpp b/Subtrees/beast/modules/beast_core/network/beast_IPAddress.cpp
index 2a15c9315d..789cc46f4c 100644
--- a/Subtrees/beast/modules/beast_core/network/beast_IPAddress.cpp
+++ b/Subtrees/beast/modules/beast_core/network/beast_IPAddress.cpp
@@ -121,7 +121,7 @@ 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/Subtrees/beast/modules/beast_core/threads/beast_Thread.cpp b/Subtrees/beast/modules/beast_core/threads/beast_Thread.cpp
index a2f7289743..0a5fffae4e 100644
--- a/Subtrees/beast/modules/beast_core/threads/beast_Thread.cpp
+++ b/Subtrees/beast/modules/beast_core/threads/beast_Thread.cpp
@@ -58,10 +58,15 @@ struct CurrentThreadHolder : public SharedObject
 
 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();