> CF has a naming convention that helps both programmer and compiler (especially the clang analyzer) to see retain/release bugs.
> <developer.apple.com/library/mac/#documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html>
> "Create" and "Copy" have special meaning in the convention.

Clang (analysis) has the ability to emit diagnostics as HTML pages. I happened to be experimenting with a a prerelease version of clang 3.0, and gave it this code as a test.
'----------
local fn MakeFoo as CFStringRef
dim as CFStringRef  s
s = fn CFStringCreateCopy( _kCFAllocatorDefault, @"bar" )
end fn = s
'----------

Here's the HTML warning, which may, and should, knock your socks off.
4toc.com/fb/report-JNKt2L.html

Robert P.