http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46339
--- Comment #18 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> 2010-11-16 15:04:39 UTC --- Dear Tobias, > If my understanding is correct, we can either try to extend the 'span' hack to > make it work for more cases - or we defer it to the array descriptor updated > and possibly error out when it is known that the hack does not work. Your understanding is correct. The case at point here should be easily fixed. It is a question of getting the span right by obtaining the element size of the array. ie. you need to go through the references until a REF_ARRAY is found and to take theelement size of that array. Passing these beasts to pointer formal arguments is a tad awkward. The only way that I know to extend the current mechanism is to pass 'span' variable in the same way as character variables; only when the formal argument is a pointer, however. This would mean that all dummy pointers would have to have a 'span' associated with them. Note that we could do array descriptor reform in two steps; first add all the extra fields and then, possibly, change the dimension structure. I say possibly about the latter because I am not convinced that it is necessary and my first attempts this summer indicated what a hard job it will be. We could get an SoC student going on it? Cheers Paul
