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For the generated projection structs, the lifetime refer to that of the whole struct, so rename the lifetime used in expansion from `'__pin` to `'__this` instead. The `__pin_phantom_data` field is renamed to `__this` for the same reason and for clarity purpose, capture a `PhantomData` of the mutable reference to the struct. Signed-off-by: Gary Guo --- rust/pin-init/internal/src/pin_data.rs | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/rust/pin-init/internal/src/pin_data.rs b/rust/pin-init/internal/src/pin_data.rs index a4d6965c1572..6e18bc9e890a 100644 --- a/rust/pin-init/internal/src/pin_data.rs +++ b/rust/pin-init/internal/src/pin_data.rs @@ -325,11 +325,11 @@ fn generate_projections( is_tuple_struct: bool, fields: &[FieldInfo<'_>], ) -> TokenStream { - let pin_lt_generics: Generics = parse_quote!(<'__pin>); - let generics_with_pin_lt = CombinedGenerics(vec![&pin_lt_generics, generics]); + let this_lt_generics: Generics = parse_quote!(<'__this>); + let generics_with_this_lt = CombinedGenerics(vec![&this_lt_generics, generics]); let (impl_generics, ty_generics, whr) = generics.split_for_impl(); - let (_, ty_generics_with_pin_lt, _) = generics_with_pin_lt.split_for_impl(); + let (_, ty_generics_with_this_lt, _) = generics_with_this_lt.split_for_impl(); let this = format_ident!("this"); @@ -348,7 +348,7 @@ fn generate_projections( if field.pinned { ( quote!( - #vis #name ::core::pin::Pin<&'__pin mut #ty>, + #vis #name ::core::pin::Pin<&'__this mut #ty>, ), quote!( // SAFETY: this field is structurally pinned. @@ -358,7 +358,7 @@ fn generate_projections( } else { ( quote!( - #vis #name &'__pin mut #ty, + #vis #name &'__this mut #ty, ), quote!( #name &mut #this.#member, @@ -379,9 +379,9 @@ fn generate_projections( let (projection_def, projection_init) = if is_tuple_struct { ( quote! { - #vis struct __Projection #generics_with_pin_lt ( + #vis struct __Projection #generics_with_this_lt ( #(#fields_decl)* - ::core::marker::PhantomData<&'__pin mut ()>, + ::core::marker::PhantomData<&'__this mut #ident #ty_generics>, ) #whr; }, quote! { @@ -394,17 +394,17 @@ fn generate_projections( } else { ( quote! { - #vis struct __Projection #generics_with_pin_lt + #vis struct __Projection #generics_with_this_lt #whr { #(#fields_decl)* - ___pin_phantom_data: ::core::marker::PhantomData<&'__pin mut ()>, + __this: ::core::marker::PhantomData<&'__this mut #ident #ty_generics>, } }, quote! { __Projection { #(#fields_proj)* - ___pin_phantom_data: ::core::marker::PhantomData, + __this: ::core::marker::PhantomData, } }, ) @@ -428,9 +428,9 @@ impl #impl_generics #ident #ty_generics /// These fields are **not** structurally pinned: #(#[doc = #not_structurally_pinned_fields_docs])* #[inline] - #vis fn project<'__pin>( - self: ::core::pin::Pin<&'__pin mut Self>, - ) -> __Projection #ty_generics_with_pin_lt { + #vis fn project<'__this>( + self: ::core::pin::Pin<&'__this mut Self>, + ) -> __Projection #ty_generics_with_this_lt { // SAFETY: we only give access to `&mut` for fields not structurally pinned. let #this = unsafe { ::core::pin::Pin::get_unchecked_mut(self) }; #projection_init -- 2.54.0