Objective-C. Accept 'nil' as indexing argument to

dictionary literals since the API which implements 
them accepts it too.  // rdar://18254621

llvm-svn: 217543

clang/lib/Sema/SemaPseudoObject.cpp

@@ -1022,7 +1022,8 @@ Sema::ObjCSubscriptKind
   // If we don't have a class type in C++, there's no way we can get an
   // expression of integral or enumeration type.
   const RecordType *RecordTy = T->getAs<RecordType>();
-  if (!RecordTy && T->isObjCObjectPointerType())
+  if (!RecordTy &&
+      (T->isObjCObjectPointerType() || T->isVoidPointerType()))
     // All other scalar cases are assumed to be dictionary indexing which
     // caller handles, with diagnostics if needed.
     return OS_Dictionary;

clang/test/SemaObjC/objc-dictionary-literal.m

@@ -3,6 +3,8 @@
 // RUN: %clang_cc1  -fsyntax-only -triple i386-apple-macosx10.9.0 -fobjc-runtime=macosx-fragile-10.9.0 -fobjc-subscripting-legacy-runtime -verify %s
 // rdar://15363492
 
+#define nil ((void *)0)
+
 @interface NSNumber
 + (NSNumber *)numberWithChar:(char)value;
 + (NSNumber *)numberWithInt:(int)value;
@@ -15,6 +17,7 @@ typedef long NSInteger;
 @interface NSDictionary
 + (id)dictionaryWithObjects:(const id [])objects forKeys:(const id <NSCopying> [])keys count:(NSUInteger)cnt;
 - (void)setObject:(id)object forKeyedSubscript:(id)key;
+- (id)objectForKeyedSubscript:(id)key;
 @end
 
 @interface NSString<NSCopying>
@@ -31,6 +34,13 @@ int main() {
 
         dict["name"] = @666; // expected-error {{indexing expression is invalid because subscript type 'char *' is not an Objective-C pointer}}
 
+        // rdar://18254621
+        [@{@"foo" : @"bar"} objectForKeyedSubscript:nil];
+        (void)@{@"foo" : @"bar"}[nil];
+
+	[@{@"foo" : @"bar"} setObject:nil forKeyedSubscript:@"gorf"];
+        @{@"foo" : @"bar"}[nil] = @"gorf";
+
 	return 0;
 }