Enum rustc_trait_selection::traits::select::BuiltinImplConditions

enum BuiltinImplConditions<'tcx> {
    Where(Binder<'tcx, Vec<Ty<'tcx>>>),
    None,
    Ambiguous,
}

When does the builtin impl for T: Trait apply?

Variants

Where(Binder<'tcx, Vec<Ty<'tcx>>>)

The impl is conditional on T1, T2, ...: Trait.

Tuple Fields of Where

0: Binder<'tcx, Vec<Ty<'tcx>>>

None

There is no built-in impl. There may be some other candidate (a where-clause or user-defined impl).

Ambiguous

It is unknown whether there is an impl.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes

Size for each variant:

• Where: 32 bytes
• None: 0 bytes
• Ambiguous: 0 bytes