On Fri, Jul 05, 2024 at 22:15:44 +0200, Emanuele Torre via Gcc wrote: > That is 6.7.3.1p3: > > > > In what follows, a pointer expression E is said to be based on object P > if (at some sequence point in the execution of B prior to the > evaluation of E) modifying P to point to a copy of the array object > into which it formerly pointed would change the value of E.153) Note > that "based" is defined only for expressions with pointer types. > > Footnote 153) In other words, E depends on the value of P itself rather > than on the value of an object referenced indirectly through P. For > example, if identifier p has type (int **restrict), then the pointer > expressions p and p+1 are based on the restricted pointer object > designated by p, but the pointer expressions *p and p[1] are not. > > > > Which would be the same paragraph of the same section on N3047, but > footnote number 168.
Obviously, we need better types on our standardese pointers. Jonathan used a pointer of type `footnote _N3220*` while Alejandro was expecting a pointer of type `footnote _N3047*`. Of course, given that they end up referring to the same thing, this may have interesting implications when they are used with `restrict`. --Ben
