Index: test/Analysis/variadic-method-types.m
===================================================================
--- test/Analysis/variadic-method-types.m	(revision 154112)
+++ test/Analysis/variadic-method-types.m	(working copy)
@@ -57,6 +57,12 @@
 + (id)setWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1)));
 - (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1)));
 @end
+@interface NSOrderedSet : NSObject <NSCopying, NSMutableCopying, NSCoding, NSFastEnumeration>
+@end
+@interface NSOrderedSet (NSOrderedSetCreation)
++ (id)orderedSetWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1)));
+- (id)initWithObjects:(id)firstObj, ... __attribute__((sentinel(0,1)));
+@end
 @protocol P;
 @class C;
 
@@ -71,6 +77,7 @@
   [NSArray arrayWithObjects:@"Foo", "Bar", "Baz", nil]; // expected-warning 2 {{Argument to 'NSArray' method 'arrayWithObjects:' should be an Objective-C pointer type, not 'char *'}}
   [NSDictionary dictionaryWithObjectsAndKeys:@"Foo", "Bar", nil]; // expected-warning {{Argument to 'NSDictionary' method 'dictionaryWithObjectsAndKeys:' should be an Objective-C pointer type, not 'char *'}}
   [NSSet setWithObjects:@"Foo", "Bar", nil]; // expected-warning {{Argument to 'NSSet' method 'setWithObjects:' should be an Objective-C pointer type, not 'char *'}}
+  [NSOrderedSet orderedSetWithObjects:@"Foo", "Bar", nil]; // expected-warning {{Argument to 'NSOrderedSet' method 'orderedSetWithObjects:' should be an Objective-C pointer type, not 'char *'}}
 
   [[[NSArray alloc] initWithObjects:@"Foo", "Bar", nil] autorelease]; // expected-warning {{Argument to 'NSArray' method 'initWithObjects:' should be an Objective-C pointer type, not 'char *'}}
   [[[NSDictionary alloc] initWithObjectsAndKeys:@"Foo", "Bar", nil] autorelease]; // expected-warning {{Argument to 'NSDictionary' method 'initWithObjectsAndKeys:' should be an Objective-C pointer type, not 'char *'}}
@@ -79,6 +86,7 @@
   [[[NSDictionary alloc] initWithObjectsAndKeys:@"Foo", fooType, nil] autorelease]; // no-warning
   [[[NSDictionary alloc] initWithObjectsAndKeys:@"Foo", barType, nil] autorelease]; // expected-warning {{Argument to 'NSDictionary' method 'initWithObjectsAndKeys:' should be an Objective-C pointer type, not 'BarType'}}
   [[[NSSet alloc] initWithObjects:@"Foo", "Bar", nil] autorelease]; // expected-warning {{Argument to 'NSSet' method 'initWithObjects:' should be an Objective-C pointer type, not 'char *'}}
+  [[[NSOrderedSet alloc] initWithObjects:@"Foo", "Bar", nil] autorelease]; // expected-warning {{Argument to 'NSOrderedSet' method 'initWithObjects:' should be an Objective-C pointer type, not 'char *'}}
 }
 
 // This previously crashed the variadic argument checker.
Index: lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp
===================================================================
--- lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp	(revision 154112)
+++ lib/StaticAnalyzer/Checkers/BasicObjCFoundationChecks.cpp	(working copy)
@@ -485,6 +485,7 @@
   mutable Selector arrayWithObjectsS;
   mutable Selector dictionaryWithObjectsAndKeysS;
   mutable Selector setWithObjectsS;
+  mutable Selector orderedSetWithObjectsS;
   mutable Selector initWithObjectsS;
   mutable Selector initWithObjectsAndKeysS;
   mutable OwningPtr<BugType> BT;
@@ -530,6 +531,11 @@
     if (isReceiverClassOrSuperclass(Class, "NSSet") &&
         S == initWithObjectsS)
       return true;
+
+    // -[NSOrderedSet initWithObjects:]
+    if (isReceiverClassOrSuperclass(Class, "NSOrderedSet") &&
+        S == initWithObjectsS)
+      return true;
   } else {
     const ObjCInterfaceDecl *Class = msg.getReceiverInterface();
 
@@ -547,6 +553,11 @@
     if (isReceiverClassOrSuperclass(Class, "NSSet") &&
         S == setWithObjectsS)
       return true;
+
+    // -[NSOrderedSet orderedSetWithObjects:]
+    if (isReceiverClassOrSuperclass(Class, "NSOrderedSet") &&
+        S == orderedSetWithObjectsS)
+      return true;
   }
 
   return false;
@@ -563,9 +574,11 @@
     dictionaryWithObjectsAndKeysS = 
       GetUnarySelector("dictionaryWithObjectsAndKeys", Ctx);
     setWithObjectsS = GetUnarySelector("setWithObjects", Ctx);
+    orderedSetWithObjectsS = GetUnarySelector("orderedSetWithObjects", Ctx);
 
     initWithObjectsS = GetUnarySelector("initWithObjects", Ctx);
     initWithObjectsAndKeysS = GetUnarySelector("initWithObjectsAndKeys", Ctx);
+    initWithObjectsAndKeysS = GetUnarySelector("initWithObjects", Ctx);
   }
 
   if (!isVariadicMessage(msg))