[cfe-dev] objc method lookup in super class implementation

[steve naroff]

Hi Jean-Daniel,

This patch looks good, however it doesn't handle 'super'.

snaroff% ../../../../Debug/bin/clang method-lookup-4.m
method-lookup-4.m:30:3: warning: method '-myMethod' not found (return  
type defaults to 'id')
   [super myMethod];
   ^~~~~~~~~~~~~~~~
1 diagnostic generated.

Since the patch relates to looking in super classes, it would be nice  
if it handled messages to 'super' as well.

Thanks,

snaroff

On Mar 8, 2009, at 7:09 AM, Jean-Daniel Dupas wrote:

> Hello,
>
> When clang lookup a method, it searches in the class implementation  
> if it is in scope,  but it does not try to search in super class  
> implementation that may be in the scope too.
>
> The result is that it emits "may not responds to selector" warning  
> where it is obvious that the object will, as its superclass  
> implement it.
>
> Here is a patch to lookup in superclasses implementations (if in  
> scope), and a test case.
>
>
>
> <lookup-superimpl.patch>
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