[Bug middle-end/121000] __builtin_dynamic_object_size should work for FAM with VLA element when annotated with counted_by

[qinzhao at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121000

--- Comment #11 from qinzhao at gcc dot gnu.org ---
(In reply to Jakub Jelinek from comment #9)

I just sent out the patches to gcc-patches alias to fix this bug and also
reduce the # of arguments from 6 to 4. 

I splited the changes into 2 separate patches in order to make each change
single purpose. 

could you please review and approve the patchs if there is no issue there?
thanks.