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Annotation of gcc/objc/todo, revision 1.1

1.1     ! root        1: Must eliminate use of stdio.h; that loses when using GNU libc.
        !             2: (It is ok to include stdio.h only when debugging,
        !             3:  for the sake of DEBUG_PRINTF.)
        !             4: Can this be done?  If not, how do we make this work?
        !             5: 
        !             6: Eliminate the asserts in record.h.
        !             7: 
        !             8: Rename the global functions in core.c to GNU-style names;
        !             9:  fix object.m at same time.
        !            10: 
        !            11: 
        !            12: It is undesirable to use statics variables such as errorStatic in
        !            13: handleRuntimeError--as dennisg noted.  Do programs depend on error
        !            14: handling to be compatible with what it is on the NeXT?
        !            15: 
        !            16: For example, would it be ok for DoesNotRecognize to return
        !            17: a method to be called, rather than a value to be returned?
        !            18: 
        !            19: If that is not ok, I have other ideas, but they are harder to
        !            20: implement.
        !            21: 
        !            22: 
        !            23: 
        !            24: Why does dennisg say that object_getIvarAddress is not thread-safe?
        !            25: 
        !            26: 
        !            27: 
        !            28: objc_msgSend can be faster.
        !            29: 1. Delete the statement  if (!theReceiver->isa).
        !            30: Instead, set the isa field of a deallocated object
        !            31: to point to a dummy class called "deallocated".
        !            32: This class should have a vector of operations
        !            33: at least as long as any class has had during this execution.
        !            34: Every element of this vector should point to `abort'.
        !            35: Don't bother to print a fancy message; that is a waste of effort.
        !            36: For something impossible, abort is *exactly* the right thing to do.
        !            37: 2. Is it really necessary to call initializeClass here?
        !            38: Can't it be done in __objc_execClass, as soon as the class
        !            39: is complete?  If you can avoid doing this here, that is
        !            40: one fewer statement to execute.
        !            41: 3. Get rid of objc_trace.
        !            42: 4. Don't check wether getIMP returns null.
        !            43: There should never be a null in the method vector.
        !            44: If the method is not defined, store in the vector
        !            45: a fake method that will print the appropriate error.
        !            46: With these changes, all you need is this:
        !            47:   if (theReceiver)
        !            48:     return getIMP (theReceiver->isa, aSel);
        !            49:   else
        !            50:     return nilMethodIMP;
        !            51: which is something that could plausibly be open-coded in the future.
        !            52: 

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