[cfe-dev] Constant CFString merge

David Chisnall csdavec at swansea.ac.uk
Fri Aug 15 12:17:29 PDT 2008

On 15 Aug 2008, at 19:59, Daniel Dunbar wrote:

> One problem here is how to handle emission of constant CFStrings when
> not in Objective-C mode.
> I don't really want to always have a CGObjCRuntime object around,  
> because
> the runtime is likely to want to add data to the module which  
> should only
> happen for ObjC files, and conditionalizing this in the  
> CGObjCRuntime is
> somewhat gross.

I can't speak for the Apple Runtime, but the GNU and √Čtoil√© runtime  
backends only emit stuff for Objective-C features that are used.  If  
you compile a file as a .c or .m file you will get the same results.

For Objective-C strings in the GNU runtime, this will emit a hook  
into the runtime library because it allows you to replace the  
constant string class at load time.  If the NeXT runtime uses a  
constant symbol to do this then it should not emit anything Objective- 
C specific if you just use the constant Objective-C string method.


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