"url = url" ? LLVM complains.

Hi,

I'm using LLVM to compile the squid source code. LLVM stopped at the
statement "a = a" and regarded as an error.

For example, in squid-3.2.5/libltdl/loaders/preopen.c, there're a
couple of such statements:

 112 url = url;
 113 request = request;
 114 msgid = msgid;

I think you guys implemented this on purpose. Can I know what does it mean?

Thanks a lot!
Tianyin

--
Tianyin XU,
http://cseweb.ucsd.edu/~tixu/