[cfe-dev] Objective-C GNU runtime 64-bit fix

[David Chisnall]

This diff fixes a problem where the compiler is reporting the wrong  
size to the runtime on 64-bit architectures.

In related news, the FSF has just approved a new runtime exception for  
the GNU Objective-C runtime, which means that code compiled with  
compilers other than gcc (unless they are based on GCC but use  
proprietary optimisations) can now use GNU libobjc without being bound  
by the GPL.

This means that clang can compile Objective-C programs for the GNU  
runtime without any licensing issues.

David

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