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use std::mem::offset_of;
struct C<T> {
v: T,
w: T,
}
struct S {
v: u8,
w: u16,
}
impl S {
fn v_offs() -> usize {
offset_of!(Self, v)
}
fn v_offs_wrong_syntax() {
offset_of!(Self, Self::v); //~ ERROR offset_of expects dot-separated field and variant names
offset_of!(S, Self); //~ ERROR no field `Self` on type `S`
}
fn offs_in_c() -> usize {
offset_of!(C<Self>, w)
}
fn offs_in_c_colon() -> usize {
offset_of!(C::<Self>, w)
}
}
mod m {
use std::mem::offset_of;
fn off() {
offset_of!(self::S, v); //~ ERROR cannot find type `S` in module
offset_of!(super::S, v);
offset_of!(crate::S, v);
}
impl super::n::T {
fn v_offs_self() -> usize {
offset_of!(Self, v) //~ ERROR field `v` of struct `T` is private
}
}
}
mod n {
pub struct T { v: u8, }
}
fn main() {
offset_of!(self::S, v);
offset_of!(Self, v); //~ ERROR cannot find type `Self` in this scope
offset_of!(S, self); //~ ERROR no field `self` on type `S`
offset_of!(S, v.self); //~ ERROR no field `self` on type `u8`
}
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