[Dwarf-Discuss] question about [0x0..0xffffffff] location list entry

Michael Eager eager@eagercon.com
Thu Jan 20 18:59:52 GMT 2011

Roland McGrath wrote:
>> DWARF does not mention overflow in address computations.
>> (Not that there is an address computation here.)  Nor does
>> it mention address ranges wrapping.
> There are indeed two address computations here: adding the base address to
> each of the two addresses in the location list entry.  I think it would be
> helpful for DWARF to say explicitly that such calculations should not
> overflow/wrap.  That is, if the base address plus a list entry address
> exceeds the maximum address representable by the CU's address_size (as in
> this example), the list entry is invalid.

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Michael Eager	 eager at eagercon.com
1960 Park Blvd., Palo Alto, CA 94306  650-325-8077

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