[cfe-commits] r149639 - /cfe/trunk/lib/Sema/SemaObjCProperty.cpp

[Fariborz Jahanian]

Author: fjahanian
Date: Thu Feb  2 16:37:48 2012
New Revision: 149639

URL: http://llvm.org/viewvc/llvm-project?rev=149639&view=rev
Log:
Further enhance comment for property in continuation class.

Modified:
    cfe/trunk/lib/Sema/SemaObjCProperty.cpp

Modified: cfe/trunk/lib/Sema/SemaObjCProperty.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaObjCProperty.cpp?rev=149639&r1=149638&r2=149639&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaObjCProperty.cpp (original)
+++ cfe/trunk/lib/Sema/SemaObjCProperty.cpp Thu Feb  2 16:37:48 2012
@@ -281,7 +281,10 @@
     QualType ConvertedType;
     // Relax the strict type matching for property type in continuation class.
     // Allow property object type of continuation class to be different as long
-    // as it narrows the object type in its primary class property.
+    // as it narrows the object type in its primary class property. Note that
+    // this conversion is safe only because the wider type is for a 'readonly'
+    // property in primary class and 'narrowed' type for a 'readwrite' property
+    // in continuation class.
     if (!isa<ObjCObjectPointerType>(PIDecl->getType()) ||
         !isa<ObjCObjectPointerType>(PDecl->getType()) ||
         (!isObjCPointerConversion(PDecl->getType(), PIDecl->getType(),