Enabled property attribute test, fixed failure.

Test/CMakeLists.txt

@@ -4,11 +4,12 @@
 
 
 set(TESTS
-	objc_msgSend.m
 	BlockImpTest.m
+	PropertyAttributeTest.m
 	PropertyIntrospectionTest.m
 	ProtocolCreation.m
 	RuntimeTest.m
+	objc_msgSend.m
 )
 
 #ExceptionTest.m

Test/PropertyAttributeTest.m

@@ -1,9 +1,14 @@
 #include <stdio.h>
-#import <Foundation/NSObject.h>
 #import <objc/runtime.h>
+#include <string.h>
 #include <assert.h>
 
-@interface helloclass : NSObject {
+#ifdef __has_attribute
+#if __has_attribute(objc_root_class)
+__attribute__((objc_root_class))
+#endif
+#endif
+@interface helloclass {
 	@private int varName;
 }
 @property (readwrite,assign) int propName;
@@ -11,6 +16,7 @@
 
 @implementation helloclass
 @synthesize propName = varName;
++ (id)class { return self; }
 @end
 
 int main()

properties.m

@@ -400,6 +400,7 @@ PRIVATE const char *constructPropertyAttributes(objc_property_t property,
 	unsigned char *encoding = malloc(encodingSize);
 	// Set the leading 0 and the offset of the name
 	unsigned char *insert = encoding;
+	BOOL needsComma = NO;
 	*(insert++) = 0;
 	*(insert++) = 0;
 	// Set the type encoding
@@ -408,33 +409,39 @@ PRIVATE const char *constructPropertyAttributes(objc_property_t property,
 		*(insert++) = 'T';
 		memcpy(insert, typeEncoding, typeSize);
 		insert += typeSize;
+		needsComma = YES;
 	}
 	// Set the flags
 	memcpy(insert, flags, i);
 	insert += i;
 	if ((property->attributes & OBJC_PR_getter) == OBJC_PR_getter)
 	{
-		if (i > 0)
+		if (needsComma)
 		{
 			*(insert++) = ',';
 		}
 		i++;
+		needsComma = YES;
 		*(insert++) = 'G';
 		memcpy(insert, property->getter_name, getterLength);
 		insert += getterLength;
 	}
 	if ((property->attributes & OBJC_PR_setter) == OBJC_PR_setter)
 	{
-		if (i > 0)
+		if (needsComma)
 		{
 			*(insert++) = ',';
 		}
 		i++;
+		needsComma = YES;
 		*(insert++) = 'S';
 		memcpy(insert, property->setter_name, setterLength);
 		insert += setterLength;
 	}
-	*(insert++) = ',';
+	if (needsComma)
+	{
+		*(insert++) = ',';
+	}
 	*(insert++) = 'V';
 	// If the instance variable name is the same as the property name, then we
 	// use the same string for both, otherwise we write the ivar name in the