[cfe-commits] r75314 - in /cfe/trunk: include/clang/AST/ include/clang/Analysis/PathSensitive/ lib/AST/ lib/Analysis/ lib/CodeGen/ lib/Frontend/ lib/Sema/ test/CodeGenObjC/ test/PCH/ test/SemaObjC/ test/SemaObjCXX/

[Fariborz Jahanian]

On Jul 13, 2009, at 1:18 PM, Chris Lattner wrote:

>>
>> This following two issues are a result of moving away from the C- 
>> structure dependency (which is a hack). More info...
>>
>> We no longer treat "struct objc_class *" as synonymous with  
>> "Class". This is a side-effect of removing  
>> "ASTContext::isObjCClassStructType(T)".
>>
>> @interface B1
>> {
>>     struct objc_class *isa;
>>     Int1 *sBase;
>>     char c;
>> }
>> @end
>>
>> Since it does effect GCC binary compatibility, we could certainly  
>> add back a hack to make them synonymous.
>
> I think that we should do this for @encode and C++ mangling.   
> Compatibility is very important at this level because it isn't a  
> matter of the compiler rejecting or producing a warning, it is a  
> silent miscompilation.

I want to affirm Chris's point that we just need to hack objc and c+ 
+'s mangling logic. We don't need the extra complication of making them
synonymous everywhere.

- fariborz

>
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