DioxusLabs/dioxus · error · syn::Error

Nameless field in struct

Error message

Nameless field in struct

What it means

Error "Nameless field in struct" thrown in DioxusLabs/dioxus.

Source

Thrown at packages/core-macro/src/props/mod.rs:259

                    builder_attr.strip_option = true;
                    // only change the default if it isn't manually set above
                    builder_attr.default.get_or_insert_with(|| {
                        syn::parse(quote!(::core::default::Default::default()).into()).unwrap()
                    });
                }

                Ok(FieldInfo {
                    ordinal,
                    name,
                    generic_ident: syn::Ident::new(
                        &format!("__{}", strip_raw_ident_prefix(name.to_string())),
                        name.span(),
                    ),
                    ty: &field.ty,
                    builder_attr,
                })
            } else {
                Err(Error::new(field.span(), "Nameless field in struct"))
            }
        }

        pub fn generic_ty_param(&self) -> syn::GenericParam {
            syn::GenericParam::Type(self.generic_ident.clone().into())
        }

        pub fn type_ident(&self) -> syn::Type {
            ident_to_type(self.generic_ident.clone())
        }

        pub fn tuplized_type_ty_param(&self) -> syn::Type {
            let mut types = syn::punctuated::Punctuated::default();
            types.push(self.ty.clone());
            types.push_punct(Default::default());
            syn::TypeTuple {
                paren_token: Default::default(),
                elems: types,

View on GitHub (pinned to 393d190a80)

When it happens

Trigger: Thrown at packages/core-macro/src/props/mod.rs:259 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of DioxusLabs/dioxus@393d190a80 (2026-08-16). Data as JSON: /api/errors/4cb4420883486bbe. Report an issue: GitHub.