r193288 - More wordsmithing on objc_requires_super documentation.

[Ted Kremenek]

Author: kremenek
Date: Wed Oct 23 18:30:08 2013
New Revision: 193288

URL: http://llvm.org/viewvc/llvm-project?rev=193288&view=rev
Log:
More wordsmithing on objc_requires_super documentation.

Modified:
    cfe/trunk/docs/LanguageExtensions.rst

Modified: cfe/trunk/docs/LanguageExtensions.rst
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LanguageExtensions.rst?rev=193288&r1=193287&r2=193288&view=diff
==============================================================================
--- cfe/trunk/docs/LanguageExtensions.rst (original)
+++ cfe/trunk/docs/LanguageExtensions.rst Wed Oct 23 18:30:08 2013
@@ -1181,19 +1181,23 @@ Objective-C requiring a call to ``super`
 --------------------------------------------------------
 
 Some Objective-C classes allow a subclass to override a particular method in a
-parent class but expect that the override chains to calling the same method in
-the parent class.  In such cases it is useful to be able to mark a method as
-requiring this chaining behavior.  For these cases, we provide an attribute to
-designate that a method requires a "call to ``super``" in the overriden method
-in the subclass.
+parent class but expect that the overriding method also calls the overridden
+method in the parent class. For these cases, we provide an attribute to
+designate that a method requires a "call to ``super``" in the overriding
+method in the subclass.
 
-**Usage**: ``__attribute__((objc_requires_super))``.  This attribute can only be placed at the end of a method declaration:
+**Usage**: ``__attribute__((objc_requires_super))``.  This attribute can only
+be placed at the end of a method declaration:
 
 .. code-block:: objc
 
   - (void)foo __attribute__((objc_requires_super));
 
-This attribute can only be applied the method declarations within a class, and not a protocol.
+This attribute can only be applied the method declarations within a class, and
+not a protocol.  Currently this attribute does not enforce any placement of
+where the call occurs in the overriding method (such as in the case of
+``-dealloc`` where the call must appear at the end).  It checks only that it
+exists.
 
 Note that on both OS X and iOS that the Foundation framework provides a
 convenience macro ``NS_REQUIRES_SUPER`` that provides syntactic sugar for this