Rollup merge of #45967 - matthewjasper:array-move-types, r=arielb1
MIR-borrowck: don't ICE for cannot move from array error Closes #45694 compile-fail test E0508 now gives ```text error[E0508]: cannot move out of type `[NonCopy; 1]`, a non-copy array (Ast) --> .\src\test\compile-fail\E0508.rs:18:18 | 18 | let _value = array[0]; //[ast]~ ERROR E0508 | ^^^^^^^^ | | | cannot move out of here | help: consider using a reference instead: `&array[0]` error[E0508]: cannot move out of type `[NonCopy; 1]`, a non-copy array (Mir) --> .\src\test\compile-fail\E0508.rs:18:18 | 18 | let _value = array[0]; //[ast]~ ERROR E0508 | ^^^^^^^^ cannot move out of here error: aborting due to 2 previous errors ```
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commit
01e979f7b1
4 changed files with 14 additions and 12 deletions
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@ -93,9 +93,7 @@ fn do_mir_borrowck<'a, 'gcx, 'tcx>(infcx: &InferCtxt<'a, 'gcx, 'tcx>,
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tcx.cannot_move_out_of(span, "borrowed_content", origin),
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IllegalMoveOriginKind::InteriorOfTypeWithDestructor { container_ty: ty } =>
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tcx.cannot_move_out_of_interior_of_drop(span, ty, origin),
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IllegalMoveOriginKind::InteriorOfSlice { elem_ty: ty, is_index } =>
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tcx.cannot_move_out_of_interior_noncopy(span, ty, is_index, origin),
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IllegalMoveOriginKind::InteriorOfArray { elem_ty: ty, is_index } =>
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IllegalMoveOriginKind::InteriorOfSliceOrArray { ty, is_index } =>
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tcx.cannot_move_out_of_interior_noncopy(span, ty, is_index, origin),
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};
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err.emit();
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@ -137,21 +137,21 @@ impl<'b, 'a, 'gcx, 'tcx> Gatherer<'b, 'a, 'gcx, 'tcx> {
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// move out of union - always move the entire union
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ty::TyAdt(adt, _) if adt.is_union() =>
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return Err(MoveError::UnionMove { path: base }),
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ty::TySlice(elem_ty) =>
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ty::TySlice(_) =>
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return Err(MoveError::cannot_move_out_of(
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mir.source_info(self.loc).span,
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InteriorOfSlice {
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elem_ty, is_index: match proj.elem {
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InteriorOfSliceOrArray {
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ty: lv_ty, is_index: match proj.elem {
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ProjectionElem::Index(..) => true,
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_ => false
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},
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})),
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ty::TyArray(elem_ty, _num_elems) => match proj.elem {
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ty::TyArray(..) => match proj.elem {
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ProjectionElem::Index(..) =>
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return Err(MoveError::cannot_move_out_of(
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mir.source_info(self.loc).span,
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InteriorOfArray {
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elem_ty, is_index: true
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InteriorOfSliceOrArray {
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ty: lv_ty, is_index: true
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})),
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_ => {
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// FIXME: still badly broken
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@ -239,8 +239,7 @@ pub(crate) enum IllegalMoveOriginKind<'tcx> {
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Static,
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BorrowedContent,
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InteriorOfTypeWithDestructor { container_ty: ty::Ty<'tcx> },
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InteriorOfSlice { elem_ty: ty::Ty<'tcx>, is_index: bool, },
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InteriorOfArray { elem_ty: ty::Ty<'tcx>, is_index: bool, },
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InteriorOfSliceOrArray { ty: ty::Ty<'tcx>, is_index: bool, },
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}
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#[derive(Debug)]
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@ -8,9 +8,14 @@
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// revisions: ast mir
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//[mir]compile-flags: -Zborrowck-mir
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struct NonCopy;
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fn main() {
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let array = [NonCopy; 1];
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let _value = array[0]; //~ ERROR E0508
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let _value = array[0]; //[ast]~ ERROR E0508
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//[mir]~^ ERROR (Ast) [E0508]
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//[mir]~| ERROR (Mir) [E0508]
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}
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