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internal: Add more trivially Sized types to is_sized check #18331

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Oct 18, 2024
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internal: Add more trivially Sized types to is_sized check #18331

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12 changes: 11 additions & 1 deletion crates/hir-ty/src/infer/unify.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -917,9 +917,19 @@ impl<'a> InferenceTable<'a> {
/// Check if given type is `Sized` or not
pub(crate) fn is_sized(&mut self, ty: &Ty) -> bool {
// Early return for some obvious types
if matches!(ty.kind(Interner), TyKind::Scalar(..) | TyKind::Ref(..) | TyKind::Raw(..)) {
if matches!(
ty.kind(Interner),
TyKind::Scalar(..)
| TyKind::Ref(..)
| TyKind::Raw(..)
| TyKind::Never
| TyKind::FnDef(..)
| TyKind::Array(..)
| TyKind::Function(_)
) {
return true;
}

if let Some((AdtId::StructId(id), subst)) = ty.as_adt() {
let struct_data = self.db.struct_data(id);
if let Some((last_field, _)) = struct_data.variant_data.fields().iter().last() {
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