Added a private constructor to Value that should prevent accidentally creating one from an int=0

modules/juce_data_structures/values/juce_Value.cpp

@@ -111,12 +111,6 @@ Value::Value (const Value& other)  : value (other.value)
 {
 }
 
-Value& Value::operator= (const Value& other)
-{
-    value = other.value;
-    return *this;
-}
-
 #if JUCE_COMPILER_SUPPORTS_MOVE_SEMANTICS
 Value::Value (Value&& other) noexcept
 {

modules/juce_data_structures/values/juce_Value.h

@@ -221,7 +221,11 @@ private:
 
     // This is disallowed to avoid confusion about whether it should
     // do a by-value or by-reference copy.
-    Value& operator= (const Value&);
+    Value& operator= (const Value&) JUCE_DELETED_FUNCTION;
+
+    // This declaration prevents accidental construction from an integer of 0,
+    // which is possible in some compilers via an implicit cast to a pointer.
+    Value (void*) JUCE_DELETED_FUNCTION;
 };
 
 /** Writes a Value to an OutputStream as a UTF8 string. */