mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-21 22:34:05 +00:00
Auto merge of #107844 - Zeegomo:no-drop-and-rep, r=cjgillot
Desugaring of drop and replace at MIR build This commit desugars the drop and replace deriving from an assignment at MIR build, avoiding the construction of the `DropAndReplace` terminator (which will be removed in a following PR). In order to retain the same error messages for replaces a new `DesugaringKind::Replace` variant is introduced. The changes in the borrowck are also useful for future work in moving drop elaboration before borrowck, as no `DropAndReplace` would be present there anymore. Notes on test diffs: * `tests/ui/borrowck/issue-58776-borrowck-scans-children`: the assignment deriving from the desugaring kills the borrow. * `tests/ui/async-await/async-fn-size-uninit-locals.rs`, `tests/mir-opt/issue_41110.test.ElaborateDrops.after.mir`, `tests/mir-opt/issue_41888.main.ElaborateDrops.after.mir`: drop elaboration generates (or reads from) a useless drop flag due to an issue with the dataflow analysis. Will be fixed independently by https://github.com/rust-lang/rust/pull/106430. See https://github.com/rust-lang/rust/pull/104488 for more context
This commit is contained in:
bors
commit
14c54b637b
@ -1467,6 +1467,32 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
|
||||
|
||||
/// Reports StorageDeadOrDrop of `place` conflicts with `borrow`.
|
||||
///
|
||||
/// Depending on the origin of the StorageDeadOrDrop, this may be
|
||||
/// reported as either a drop or an illegal mutation of a borrowed value.
|
||||
/// The latter is preferred when the this is a drop triggered by a
|
||||
/// reassignment, as it's more user friendly to report a problem with the
|
||||
/// explicit assignment than the implicit drop.
|
||||
#[instrument(level = "debug", skip(self))]
|
||||
pub(crate) fn report_storage_dead_or_drop_of_borrowed(
|
||||
&mut self,
|
||||
location: Location,
|
||||
place_span: (Place<'tcx>, Span),
|
||||
borrow: &BorrowData<'tcx>,
|
||||
) {
|
||||
// It's sufficient to check the last desugaring as Replace is the last
|
||||
// one to be applied.
|
||||
if let Some(DesugaringKind::Replace) = place_span.1.desugaring_kind() {
|
||||
self.report_illegal_mutation_of_borrowed(location, place_span, borrow)
|
||||
} else {
|
||||
self.report_borrowed_value_does_not_live_long_enough(
|
||||
location,
|
||||
borrow,
|
||||
place_span,
|
||||
Some(WriteKind::StorageDeadOrDrop),
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
/// This means that some data referenced by `borrow` needs to live
|
||||
/// past the point where the StorageDeadOrDrop of `place` occurs.
|
||||
/// This is usually interpreted as meaning that `place` has too
|
||||
|
||||
@ -925,7 +925,20 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
|
||||
return OtherUse(use_span);
|
||||
}
|
||||
|
||||
for stmt in &self.body[location.block].statements[location.statement_index + 1..] {
|
||||
// drop and replace might have moved the assignment to the next block
|
||||
let maybe_additional_statement =
|
||||
if let TerminatorKind::Drop { target: drop_target, .. } =
|
||||
self.body[location.block].terminator().kind
|
||||
{
|
||||
self.body[drop_target].statements.first()
|
||||
} else {
|
||||
None
|
||||
};
|
||||
|
||||
let statements =
|
||||
self.body[location.block].statements[location.statement_index + 1..].iter();
|
||||
|
||||
for stmt in statements.chain(maybe_additional_statement) {
|
||||
if let StatementKind::Assign(box (_, Rvalue::Aggregate(kind, places))) = &stmt.kind {
|
||||
let (&def_id, is_generator) = match kind {
|
||||
box AggregateKind::Closure(def_id, _) => (def_id, false),
|
||||
|
||||
@ -828,7 +828,13 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
|
||||
let Some(hir::Node::Item(item)) = node else { return; };
|
||||
let hir::ItemKind::Fn(.., body_id) = item.kind else { return; };
|
||||
let body = self.infcx.tcx.hir().body(body_id);
|
||||
let mut v = V { assign_span: span, err, ty, suggested: false };
|
||||
let mut assign_span = span;
|
||||
// Drop desugaring is done at MIR build so it's not in the HIR
|
||||
if let Some(DesugaringKind::Replace) = span.desugaring_kind() {
|
||||
assign_span.remove_mark();
|
||||
}
|
||||
|
||||
let mut v = V { assign_span, err, ty, suggested: false };
|
||||
v.visit_body(body);
|
||||
if !v.suggested {
|
||||
err.help(&format!(
|
||||
|
||||
@ -1185,12 +1185,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
|
||||
this.buffer_error(err);
|
||||
}
|
||||
WriteKind::StorageDeadOrDrop => this
|
||||
.report_borrowed_value_does_not_live_long_enough(
|
||||
location,
|
||||
borrow,
|
||||
place_span,
|
||||
Some(kind),
|
||||
),
|
||||
.report_storage_dead_or_drop_of_borrowed(location, place_span, borrow),
|
||||
WriteKind::Mutate => {
|
||||
this.report_illegal_mutation_of_borrowed(location, place_span, borrow)
|
||||
}
|
||||
|
||||
@ -40,7 +40,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
|
||||
// Generate better code for things that don't need to be
|
||||
// dropped.
|
||||
if lhs.ty.needs_drop(this.tcx, this.param_env) {
|
||||
let rhs = unpack!(block = this.as_local_operand(block, rhs));
|
||||
let rhs = unpack!(block = this.as_local_rvalue(block, rhs));
|
||||
let lhs = unpack!(block = this.as_place(block, lhs));
|
||||
unpack!(block = this.build_drop_and_replace(block, lhs_span, lhs, rhs));
|
||||
} else {
|
||||
|
||||
@ -91,7 +91,7 @@ use rustc_middle::middle::region;
|
||||
use rustc_middle::mir::*;
|
||||
use rustc_middle::thir::{Expr, LintLevel};
|
||||
|
||||
use rustc_span::{Span, DUMMY_SP};
|
||||
use rustc_span::{DesugaringKind, Span, DUMMY_SP};
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Scopes<'tcx> {
|
||||
@ -1118,24 +1118,35 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
|
||||
}
|
||||
|
||||
/// Utility function for *non*-scope code to build their own drops
|
||||
/// Force a drop at this point in the MIR by creating a new block.
|
||||
pub(crate) fn build_drop_and_replace(
|
||||
&mut self,
|
||||
block: BasicBlock,
|
||||
span: Span,
|
||||
place: Place<'tcx>,
|
||||
value: Operand<'tcx>,
|
||||
value: Rvalue<'tcx>,
|
||||
) -> BlockAnd<()> {
|
||||
let span = self.tcx.with_stable_hashing_context(|hcx| {
|
||||
span.mark_with_reason(None, DesugaringKind::Replace, self.tcx.sess.edition(), hcx)
|
||||
});
|
||||
let source_info = self.source_info(span);
|
||||
let next_target = self.cfg.start_new_block();
|
||||
|
||||
// create the new block for the assignment
|
||||
let assign = self.cfg.start_new_block();
|
||||
self.cfg.push_assign(assign, source_info, place, value.clone());
|
||||
|
||||
// create the new block for the assignment in the case of unwinding
|
||||
let assign_unwind = self.cfg.start_new_cleanup_block();
|
||||
self.cfg.push_assign(assign_unwind, source_info, place, value.clone());
|
||||
|
||||
self.cfg.terminate(
|
||||
block,
|
||||
source_info,
|
||||
TerminatorKind::DropAndReplace { place, value, target: next_target, unwind: None },
|
||||
TerminatorKind::Drop { place, target: assign, unwind: Some(assign_unwind) },
|
||||
);
|
||||
self.diverge_from(block);
|
||||
|
||||
next_target.unit()
|
||||
assign.unit()
|
||||
}
|
||||
|
||||
/// Creates an `Assert` terminator and return the success block.
|
||||
@ -1413,8 +1424,15 @@ impl<'tcx> DropTreeBuilder<'tcx> for Unwind {
|
||||
fn add_entry(cfg: &mut CFG<'tcx>, from: BasicBlock, to: BasicBlock) {
|
||||
let term = &mut cfg.block_data_mut(from).terminator_mut();
|
||||
match &mut term.kind {
|
||||
TerminatorKind::Drop { unwind, .. }
|
||||
| TerminatorKind::DropAndReplace { unwind, .. }
|
||||
TerminatorKind::Drop { unwind, .. } => {
|
||||
if let Some(unwind) = *unwind {
|
||||
let source_info = term.source_info;
|
||||
cfg.terminate(unwind, source_info, TerminatorKind::Goto { target: to });
|
||||
} else {
|
||||
*unwind = Some(to);
|
||||
}
|
||||
}
|
||||
TerminatorKind::DropAndReplace { unwind, .. }
|
||||
| TerminatorKind::FalseUnwind { unwind, .. }
|
||||
| TerminatorKind::Call { cleanup: unwind, .. }
|
||||
| TerminatorKind::Assert { cleanup: unwind, .. }
|
||||
|
||||
@ -14,7 +14,7 @@ use rustc_mir_dataflow::un_derefer::UnDerefer;
|
||||
use rustc_mir_dataflow::MoveDataParamEnv;
|
||||
use rustc_mir_dataflow::{on_all_children_bits, on_all_drop_children_bits};
|
||||
use rustc_mir_dataflow::{Analysis, ResultsCursor};
|
||||
use rustc_span::Span;
|
||||
use rustc_span::{DesugaringKind, Span};
|
||||
use rustc_target::abi::VariantIdx;
|
||||
use std::fmt;
|
||||
|
||||
@ -425,11 +425,20 @@ impl<'b, 'tcx> ElaborateDropsCtxt<'b, 'tcx> {
|
||||
bb,
|
||||
),
|
||||
LookupResult::Parent(..) => {
|
||||
if !matches!(
|
||||
terminator.source_info.span.desugaring_kind(),
|
||||
Some(DesugaringKind::Replace),
|
||||
) {
|
||||
self.tcx.sess.delay_span_bug(
|
||||
terminator.source_info.span,
|
||||
&format!("drop of untracked value {:?}", bb),
|
||||
);
|
||||
}
|
||||
// A drop and replace behind a pointer/array/whatever.
|
||||
// The borrow checker requires that these locations are initialized before the assignment,
|
||||
// so we just leave an unconditional drop.
|
||||
assert!(!data.is_cleanup);
|
||||
}
|
||||
}
|
||||
}
|
||||
TerminatorKind::DropAndReplace { mut place, ref value, target, unwind } => {
|
||||
|
||||
@ -1151,6 +1151,7 @@ pub enum DesugaringKind {
|
||||
Await,
|
||||
ForLoop,
|
||||
WhileLoop,
|
||||
Replace,
|
||||
}
|
||||
|
||||
impl DesugaringKind {
|
||||
@ -1166,6 +1167,7 @@ impl DesugaringKind {
|
||||
DesugaringKind::OpaqueTy => "`impl Trait`",
|
||||
DesugaringKind::ForLoop => "`for` loop",
|
||||
DesugaringKind::WhileLoop => "`while` loop",
|
||||
DesugaringKind::Replace => "drop and replace",
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
85
tests/mir-opt/basic_assignment.main.ElaborateDrops.diff
Normal file
85
tests/mir-opt/basic_assignment.main.ElaborateDrops.diff
Normal file
@ -0,0 +1,85 @@
|
||||
- // MIR for `main` before ElaborateDrops
|
||||
+ // MIR for `main` after ElaborateDrops
|
||||
|
||||
fn main() -> () {
|
||||
let mut _0: (); // return place in scope 0 at $DIR/basic_assignment.rs:+0:11: +0:11
|
||||
let _1: bool; // in scope 0 at $DIR/basic_assignment.rs:+1:9: +1:17
|
||||
let mut _3: bool; // in scope 0 at $DIR/basic_assignment.rs:+6:16: +6:24
|
||||
let mut _6: std::option::Option<std::boxed::Box<u32>>; // in scope 0 at $DIR/basic_assignment.rs:+13:14: +13:20
|
||||
scope 1 {
|
||||
debug nodrop_x => _1; // in scope 1 at $DIR/basic_assignment.rs:+1:9: +1:17
|
||||
let _2: bool; // in scope 1 at $DIR/basic_assignment.rs:+2:9: +2:17
|
||||
scope 2 {
|
||||
debug nodrop_y => _2; // in scope 2 at $DIR/basic_assignment.rs:+2:9: +2:17
|
||||
let _4: std::option::Option<std::boxed::Box<u32>>; // in scope 2 at $DIR/basic_assignment.rs:+8:9: +8:15
|
||||
scope 3 {
|
||||
debug drop_x => _4; // in scope 3 at $DIR/basic_assignment.rs:+8:9: +8:15
|
||||
let _5: std::option::Option<std::boxed::Box<u32>>; // in scope 3 at $DIR/basic_assignment.rs:+9:9: +9:15
|
||||
scope 4 {
|
||||
debug drop_y => _5; // in scope 4 at $DIR/basic_assignment.rs:+9:9: +9:15
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bb0: {
|
||||
StorageLive(_1); // scope 0 at $DIR/basic_assignment.rs:+1:9: +1:17
|
||||
_1 = const false; // scope 0 at $DIR/basic_assignment.rs:+1:20: +1:25
|
||||
StorageLive(_2); // scope 1 at $DIR/basic_assignment.rs:+2:9: +2:17
|
||||
StorageLive(_3); // scope 2 at $DIR/basic_assignment.rs:+6:16: +6:24
|
||||
_3 = _1; // scope 2 at $DIR/basic_assignment.rs:+6:16: +6:24
|
||||
_2 = move _3; // scope 2 at $DIR/basic_assignment.rs:+6:5: +6:24
|
||||
StorageDead(_3); // scope 2 at $DIR/basic_assignment.rs:+6:23: +6:24
|
||||
StorageLive(_4); // scope 2 at $DIR/basic_assignment.rs:+8:9: +8:15
|
||||
_4 = Option::<Box<u32>>::None; // scope 2 at $DIR/basic_assignment.rs:+8:36: +8:40
|
||||
StorageLive(_5); // scope 3 at $DIR/basic_assignment.rs:+9:9: +9:15
|
||||
StorageLive(_6); // scope 4 at $DIR/basic_assignment.rs:+13:14: +13:20
|
||||
_6 = move _4; // scope 4 at $DIR/basic_assignment.rs:+13:14: +13:20
|
||||
- drop(_5) -> [return: bb1, unwind: bb2]; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
+ goto -> bb1; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
}
|
||||
|
||||
bb1: {
|
||||
_5 = move _6; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
- drop(_6) -> [return: bb3, unwind: bb6]; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
+ goto -> bb3; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
}
|
||||
|
||||
bb2 (cleanup): {
|
||||
_5 = move _6; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
drop(_6) -> bb6; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
}
|
||||
|
||||
bb3: {
|
||||
StorageDead(_6); // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
_0 = const (); // scope 0 at $DIR/basic_assignment.rs:+0:11: +14:2
|
||||
drop(_5) -> [return: bb4, unwind: bb7]; // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
bb4: {
|
||||
StorageDead(_5); // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
- drop(_4) -> bb5; // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
+ goto -> bb5; // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
bb5: {
|
||||
StorageDead(_4); // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
StorageDead(_2); // scope 1 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
StorageDead(_1); // scope 0 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
return; // scope 0 at $DIR/basic_assignment.rs:+14:2: +14:2
|
||||
}
|
||||
|
||||
bb6 (cleanup): {
|
||||
drop(_5) -> bb7; // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
bb7 (cleanup): {
|
||||
- drop(_4) -> bb8; // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
+ goto -> bb8; // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
bb8 (cleanup): {
|
||||
resume; // scope 0 at $DIR/basic_assignment.rs:+0:1: +14:2
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
// MIR for `main` after SimplifyCfg-initial
|
||||
|
||||
| User Type Annotations
|
||||
| 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) }, span: $DIR/basic_assignment.rs:18:17: 18:33, inferred_ty: std::option::Option<std::boxed::Box<u32>>
|
||||
| 1: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) }, span: $DIR/basic_assignment.rs:18:17: 18:33, inferred_ty: std::option::Option<std::boxed::Box<u32>>
|
||||
| 0: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) }, span: $DIR/basic_assignment.rs:20:17: 20:33, inferred_ty: std::option::Option<std::boxed::Box<u32>>
|
||||
| 1: user_ty: Canonical { max_universe: U0, variables: [], value: Ty(std::option::Option<std::boxed::Box<u32>>) }, span: $DIR/basic_assignment.rs:20:17: 20:33, inferred_ty: std::option::Option<std::boxed::Box<u32>>
|
||||
|
|
||||
fn main() -> () {
|
||||
let mut _0: (); // return place in scope 0 at $DIR/basic_assignment.rs:+0:11: +0:11
|
||||
@ -41,35 +41,37 @@ fn main() -> () {
|
||||
StorageLive(_5); // scope 3 at $DIR/basic_assignment.rs:+9:9: +9:15
|
||||
StorageLive(_6); // scope 4 at $DIR/basic_assignment.rs:+13:14: +13:20
|
||||
_6 = move _4; // scope 4 at $DIR/basic_assignment.rs:+13:14: +13:20
|
||||
replace(_5 <- move _6) -> [return: bb1, unwind: bb5]; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
drop(_5) -> [return: bb1, unwind: bb2]; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
}
|
||||
|
||||
bb1: {
|
||||
drop(_6) -> [return: bb2, unwind: bb6]; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
_5 = move _6; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
drop(_6) -> [return: bb3, unwind: bb6]; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
}
|
||||
|
||||
bb2: {
|
||||
StorageDead(_6); // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
_0 = const (); // scope 0 at $DIR/basic_assignment.rs:+0:11: +14:2
|
||||
drop(_5) -> [return: bb3, unwind: bb7]; // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
bb2 (cleanup): {
|
||||
_5 = move _6; // scope 4 at $DIR/basic_assignment.rs:+13:5: +13:11
|
||||
drop(_6) -> bb6; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
}
|
||||
|
||||
bb3: {
|
||||
StorageDead(_5); // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
drop(_4) -> [return: bb4, unwind: bb8]; // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
StorageDead(_6); // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
_0 = const (); // scope 0 at $DIR/basic_assignment.rs:+0:11: +14:2
|
||||
drop(_5) -> [return: bb4, unwind: bb7]; // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
bb4: {
|
||||
StorageDead(_5); // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
drop(_4) -> [return: bb5, unwind: bb8]; // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
bb5: {
|
||||
StorageDead(_4); // scope 2 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
StorageDead(_2); // scope 1 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
StorageDead(_1); // scope 0 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
return; // scope 0 at $DIR/basic_assignment.rs:+14:2: +14:2
|
||||
}
|
||||
|
||||
bb5 (cleanup): {
|
||||
drop(_6) -> bb6; // scope 4 at $DIR/basic_assignment.rs:+13:19: +13:20
|
||||
}
|
||||
|
||||
bb6 (cleanup): {
|
||||
drop(_5) -> bb7; // scope 3 at $DIR/basic_assignment.rs:+14:1: +14:2
|
||||
}
|
||||
|
||||
@ -1,5 +1,7 @@
|
||||
// needs-unwind
|
||||
// this tests move up progration, which is not yet implemented
|
||||
|
||||
// EMIT_MIR basic_assignment.main.ElaborateDrops.diff
|
||||
// EMIT_MIR basic_assignment.main.SimplifyCfg-initial.after.mir
|
||||
|
||||
// Check codegen for assignments (`a = b`) where the left-hand-side is
|
||||
|
||||
@ -38,37 +38,39 @@
|
||||
StorageLive(_5); // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
+ _6 = const false; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
_5 = move _1; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
- replace(_2 <- move _5) -> [return: bb2, unwind: bb6]; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
+ goto -> bb12; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
- drop(_2) -> [return: bb2, unwind: bb3]; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
+ goto -> bb2; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
}
|
||||
|
||||
bb2: {
|
||||
- drop(_5) -> [return: bb3, unwind: bb8]; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
+ goto -> bb3; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
_2 = move _5; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
- drop(_5) -> [return: bb4, unwind: bb8]; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
+ goto -> bb4; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
}
|
||||
|
||||
bb3: {
|
||||
StorageDead(_5); // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
_0 = const (); // scope 0 at $DIR/issue_41110.rs:+0:15: +5:2
|
||||
drop(_2) -> [return: bb4, unwind: bb9]; // scope 1 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
bb3 (cleanup): {
|
||||
_2 = move _5; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
drop(_5) -> bb8; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
}
|
||||
|
||||
bb4: {
|
||||
StorageDead(_2); // scope 1 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
- drop(_1) -> bb5; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
+ goto -> bb5; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
StorageDead(_5); // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
_0 = const (); // scope 0 at $DIR/issue_41110.rs:+0:15: +5:2
|
||||
drop(_2) -> [return: bb5, unwind: bb9]; // scope 1 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
}
|
||||
|
||||
bb5: {
|
||||
StorageDead(_2); // scope 1 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
- drop(_1) -> bb6; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
+ goto -> bb6; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
}
|
||||
|
||||
bb6: {
|
||||
+ _6 = const false; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
StorageDead(_1); // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
return; // scope 0 at $DIR/issue_41110.rs:+5:2: +5:2
|
||||
}
|
||||
|
||||
bb6 (cleanup): {
|
||||
drop(_5) -> bb8; // scope 2 at $DIR/issue_41110.rs:+4:9: +4:10
|
||||
}
|
||||
|
||||
bb7 (cleanup): {
|
||||
- drop(_4) -> bb8; // scope 2 at $DIR/issue_41110.rs:+3:11: +3:12
|
||||
+ goto -> bb8; // scope 2 at $DIR/issue_41110.rs:+3:11: +3:12
|
||||
@ -81,7 +83,7 @@
|
||||
|
||||
bb9 (cleanup): {
|
||||
- drop(_1) -> bb10; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
+ goto -> bb14; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
+ goto -> bb12; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
}
|
||||
|
||||
bb10 (cleanup): {
|
||||
@ -89,21 +91,11 @@
|
||||
+ }
|
||||
+
|
||||
+ bb11 (cleanup): {
|
||||
+ _2 = move _5; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
+ goto -> bb10; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
+ }
|
||||
+
|
||||
+ bb12: {
|
||||
+ _2 = move _5; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
+ goto -> bb2; // scope 2 at $DIR/issue_41110.rs:+4:5: +4:6
|
||||
+ }
|
||||
+
|
||||
+ bb13 (cleanup): {
|
||||
+ drop(_1) -> bb10; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
+ }
|
||||
+
|
||||
+ bb14 (cleanup): {
|
||||
+ switchInt(_6) -> [0: bb10, otherwise: bb13]; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
+ bb12 (cleanup): {
|
||||
+ switchInt(_6) -> [0: bb10, otherwise: bb11]; // scope 0 at $DIR/issue_41110.rs:+5:1: +5:2
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
}
|
||||
|
||||
bb1: {
|
||||
switchInt(move _2) -> [0: bb7, otherwise: bb2]; // scope 1 at $DIR/issue_41888.rs:+2:8: +2:14
|
||||
switchInt(move _2) -> [0: bb8, otherwise: bb2]; // scope 1 at $DIR/issue_41888.rs:+2:8: +2:14
|
||||
}
|
||||
|
||||
bb2: {
|
||||
@ -43,47 +43,56 @@
|
||||
_4 = K; // scope 1 at $DIR/issue_41888.rs:+3:18: +3:19
|
||||
_3 = E::F(move _4); // scope 1 at $DIR/issue_41888.rs:+3:13: +3:20
|
||||
StorageDead(_4); // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
- replace(_1 <- move _3) -> [return: bb3, unwind: bb10]; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ goto -> bb14; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
- drop(_1) -> [return: bb3, unwind: bb4]; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ goto -> bb3; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
}
|
||||
|
||||
bb3: {
|
||||
- drop(_3) -> [return: bb4, unwind: bb11]; // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
+ goto -> bb4; // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
+ _7 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _8 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _9 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
_1 = move _3; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
- drop(_3) -> [return: bb5, unwind: bb11]; // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
+ goto -> bb5; // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
}
|
||||
|
||||
bb4: {
|
||||
StorageDead(_3); // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
_5 = discriminant(_1); // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
|
||||
switchInt(move _5) -> [0: bb5, otherwise: bb6]; // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
|
||||
bb4 (cleanup): {
|
||||
_1 = move _3; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
drop(_3) -> bb11; // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
}
|
||||
|
||||
bb5: {
|
||||
StorageDead(_3); // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
_5 = discriminant(_1); // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
|
||||
switchInt(move _5) -> [0: bb6, otherwise: bb7]; // scope 2 at $DIR/issue_41888.rs:+4:16: +4:24
|
||||
}
|
||||
|
||||
bb6: {
|
||||
StorageLive(_6); // scope 2 at $DIR/issue_41888.rs:+4:21: +4:23
|
||||
+ _9 = const false; // scope 2 at $DIR/issue_41888.rs:+4:21: +4:23
|
||||
_6 = move ((_1 as F).0: K); // scope 2 at $DIR/issue_41888.rs:+4:21: +4:23
|
||||
_0 = const (); // scope 2 at $DIR/issue_41888.rs:+4:29: +7:10
|
||||
StorageDead(_6); // scope 1 at $DIR/issue_41888.rs:+7:9: +7:10
|
||||
goto -> bb8; // scope 1 at $DIR/issue_41888.rs:+4:9: +7:10
|
||||
}
|
||||
|
||||
bb6: {
|
||||
_0 = const (); // scope 1 at $DIR/issue_41888.rs:+7:10: +7:10
|
||||
goto -> bb8; // scope 1 at $DIR/issue_41888.rs:+4:9: +7:10
|
||||
goto -> bb9; // scope 1 at $DIR/issue_41888.rs:+4:9: +7:10
|
||||
}
|
||||
|
||||
bb7: {
|
||||
_0 = const (); // scope 1 at $DIR/issue_41888.rs:+8:6: +8:6
|
||||
goto -> bb8; // scope 1 at $DIR/issue_41888.rs:+2:5: +8:6
|
||||
_0 = const (); // scope 1 at $DIR/issue_41888.rs:+7:10: +7:10
|
||||
goto -> bb9; // scope 1 at $DIR/issue_41888.rs:+4:9: +7:10
|
||||
}
|
||||
|
||||
bb8: {
|
||||
StorageDead(_2); // scope 1 at $DIR/issue_41888.rs:+8:5: +8:6
|
||||
- drop(_1) -> bb9; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ goto -> bb20; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
_0 = const (); // scope 1 at $DIR/issue_41888.rs:+8:6: +8:6
|
||||
goto -> bb9; // scope 1 at $DIR/issue_41888.rs:+2:5: +8:6
|
||||
}
|
||||
|
||||
bb9: {
|
||||
StorageDead(_2); // scope 1 at $DIR/issue_41888.rs:+8:5: +8:6
|
||||
- drop(_1) -> bb10; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ goto -> bb18; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
}
|
||||
|
||||
bb10: {
|
||||
+ _7 = const false; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ _8 = const false; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ _9 = const false; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
@ -91,10 +100,6 @@
|
||||
return; // scope 0 at $DIR/issue_41888.rs:+9:2: +9:2
|
||||
}
|
||||
|
||||
bb10 (cleanup): {
|
||||
drop(_3) -> bb11; // scope 1 at $DIR/issue_41888.rs:+3:19: +3:20
|
||||
}
|
||||
|
||||
bb11 (cleanup): {
|
||||
- drop(_1) -> bb12; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ goto -> bb12; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
@ -104,55 +109,39 @@
|
||||
resume; // scope 0 at $DIR/issue_41888.rs:+0:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb13 (cleanup): {
|
||||
+ _7 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _8 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _9 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _1 = move _3; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ goto -> bb12; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ }
|
||||
+
|
||||
+ bb14: {
|
||||
+ _7 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _8 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _9 = const true; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ _1 = move _3; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ goto -> bb3; // scope 1 at $DIR/issue_41888.rs:+3:9: +3:10
|
||||
+ }
|
||||
+
|
||||
+ bb15: {
|
||||
+ bb13: {
|
||||
+ _7 = const false; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ goto -> bb9; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ goto -> bb10; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb16 (cleanup): {
|
||||
+ bb14 (cleanup): {
|
||||
+ goto -> bb12; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb17: {
|
||||
+ drop(_1) -> [return: bb15, unwind: bb12]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ bb15: {
|
||||
+ drop(_1) -> [return: bb13, unwind: bb12]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb18 (cleanup): {
|
||||
+ bb16 (cleanup): {
|
||||
+ drop(_1) -> bb12; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb19: {
|
||||
+ bb17: {
|
||||
+ _10 = discriminant(_1); // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ switchInt(move _10) -> [0: bb15, otherwise: bb17]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ switchInt(move _10) -> [0: bb13, otherwise: bb15]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb20: {
|
||||
+ switchInt(_7) -> [0: bb15, otherwise: bb19]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ bb18: {
|
||||
+ switchInt(_7) -> [0: bb13, otherwise: bb17]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb21 (cleanup): {
|
||||
+ bb19 (cleanup): {
|
||||
+ _11 = discriminant(_1); // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ switchInt(move _11) -> [0: bb16, otherwise: bb18]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ switchInt(move _11) -> [0: bb14, otherwise: bb16]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ }
|
||||
+
|
||||
+ bb22 (cleanup): {
|
||||
+ switchInt(_7) -> [0: bb12, otherwise: bb21]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
+ bb20 (cleanup): {
|
||||
+ switchInt(_7) -> [0: bb12, otherwise: bb19]; // scope 0 at $DIR/issue_41888.rs:+9:1: +9:2
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -28,21 +28,21 @@ fn main() -> () {
|
||||
StorageDead(_5); // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:28: +2:29
|
||||
StorageLive(_6); // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
_6 = move (_1.0: Aligned); // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
drop(_6) -> [return: bb4, unwind: bb3]; // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
drop(_6) -> [return: bb4, unwind: bb1]; // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
}
|
||||
|
||||
bb1: {
|
||||
bb1 (cleanup): {
|
||||
(_1.0: Aligned) = move _4; // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
drop(_1) -> bb3; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+3:1: +3:2
|
||||
}
|
||||
|
||||
bb2: {
|
||||
StorageDead(_1); // scope 0 at $DIR/packed_struct_drop_aligned.rs:+3:1: +3:2
|
||||
return; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+3:2: +3:2
|
||||
}
|
||||
|
||||
bb2 (cleanup): {
|
||||
resume; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+0:1: +3:2
|
||||
}
|
||||
|
||||
bb3 (cleanup): {
|
||||
(_1.0: Aligned) = move _4; // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
drop(_1) -> bb2; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+3:1: +3:2
|
||||
resume; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+0:1: +3:2
|
||||
}
|
||||
|
||||
bb4: {
|
||||
@ -50,6 +50,6 @@ fn main() -> () {
|
||||
(_1.0: Aligned) = move _4; // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:5: +2:8
|
||||
StorageDead(_4); // scope 1 at $DIR/packed_struct_drop_aligned.rs:+2:28: +2:29
|
||||
_0 = const (); // scope 0 at $DIR/packed_struct_drop_aligned.rs:+0:11: +3:2
|
||||
drop(_1) -> [return: bb1, unwind: bb2]; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+3:1: +3:2
|
||||
drop(_1) -> [return: bb2, unwind: bb3]; // scope 0 at $DIR/packed_struct_drop_aligned.rs:+3:1: +3:2
|
||||
}
|
||||
}
|
||||
|
||||
@ -29,8 +29,8 @@
|
||||
29| 1| some_string = Some(String::from("the string content"));
|
||||
30| 1| let
|
||||
31| 1| a
|
||||
32| 1| =
|
||||
33| 1| ||
|
||||
32| | =
|
||||
33| | ||
|
||||
34| 0| {
|
||||
35| 0| let mut countdown = 0;
|
||||
36| 0| if is_false {
|
||||
|
||||
@ -8,6 +8,7 @@ fn a() {
|
||||
//~^ NOTE `vec[_]` is borrowed here
|
||||
vec[0] = Box::new(4); //~ ERROR cannot assign
|
||||
//~^ NOTE `vec[_]` is assigned to here
|
||||
//~| NOTE in this expansion of desugaring of drop and replace
|
||||
_a.use_ref();
|
||||
//~^ NOTE borrow later used here
|
||||
}
|
||||
@ -22,6 +23,7 @@ fn b() {
|
||||
//~^ `vec[_]` is borrowed here
|
||||
vec[0] = Box::new(4); //~ ERROR cannot assign
|
||||
//~^ NOTE `vec[_]` is assigned to here
|
||||
//~| NOTE in this expansion of desugaring of drop and replace
|
||||
_b.use_ref();
|
||||
//~^ NOTE borrow later used here
|
||||
}
|
||||
|
||||
@ -6,24 +6,24 @@ LL | [box ref _a, _, _] => {
|
||||
LL |
|
||||
LL | vec[0] = Box::new(4);
|
||||
| ^^^^^^ `vec[_]` is assigned to here but it was already borrowed
|
||||
LL |
|
||||
...
|
||||
LL | _a.use_ref();
|
||||
| ------------ borrow later used here
|
||||
|
||||
error[E0506]: cannot assign to `vec[_]` because it is borrowed
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:23:13
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:24:13
|
||||
|
|
||||
LL | &mut [ref _b @ ..] => {
|
||||
| ------ `vec[_]` is borrowed here
|
||||
LL |
|
||||
LL | vec[0] = Box::new(4);
|
||||
| ^^^^^^ `vec[_]` is assigned to here but it was already borrowed
|
||||
LL |
|
||||
...
|
||||
LL | _b.use_ref();
|
||||
| ------------ borrow later used here
|
||||
|
||||
error[E0508]: cannot move out of type `[Box<isize>]`, a non-copy slice
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:34:11
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:36:11
|
||||
|
|
||||
LL | match vec {
|
||||
| ^^^ cannot move out of here
|
||||
@ -41,7 +41,7 @@ LL + [_a,
|
||||
|
|
||||
|
||||
error[E0508]: cannot move out of type `[Box<isize>]`, a non-copy slice
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:46:13
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:48:13
|
||||
|
|
||||
LL | let a = vec[0];
|
||||
| ^^^^^^
|
||||
@ -55,7 +55,7 @@ LL | let a = &vec[0];
|
||||
| +
|
||||
|
||||
error[E0508]: cannot move out of type `[Box<isize>]`, a non-copy slice
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:55:11
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:57:11
|
||||
|
|
||||
LL | match vec {
|
||||
| ^^^ cannot move out of here
|
||||
@ -73,7 +73,7 @@ LL + [
|
||||
|
|
||||
|
||||
error[E0508]: cannot move out of type `[Box<isize>]`, a non-copy slice
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:65:13
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:67:13
|
||||
|
|
||||
LL | let a = vec[0];
|
||||
| ^^^^^^
|
||||
@ -87,7 +87,7 @@ LL | let a = &vec[0];
|
||||
| +
|
||||
|
||||
error[E0508]: cannot move out of type `[Box<isize>]`, a non-copy slice
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:74:11
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:76:11
|
||||
|
|
||||
LL | match vec {
|
||||
| ^^^ cannot move out of here
|
||||
@ -106,7 +106,7 @@ LL + [_a, _b, _c] => {}
|
||||
|
|
||||
|
||||
error[E0508]: cannot move out of type `[Box<isize>]`, a non-copy slice
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:85:13
|
||||
--> $DIR/borrowck-vec-pattern-nesting.rs:87:13
|
||||
|
|
||||
LL | let a = vec[0];
|
||||
| ^^^^^^
|
||||
|
||||
@ -5,6 +5,7 @@ fn test_drop_replace() {
|
||||
b = Box::new(1); //~ NOTE first assignment
|
||||
b = Box::new(2); //~ ERROR cannot assign twice to immutable variable `b`
|
||||
//~| NOTE cannot assign twice to immutable
|
||||
//~| NOTE in this expansion of desugaring of drop and replace
|
||||
}
|
||||
|
||||
fn test_call() {
|
||||
@ -13,12 +14,14 @@ fn test_call() {
|
||||
//~| SUGGESTION mut b
|
||||
b = Box::new(2); //~ ERROR cannot assign twice to immutable variable `b`
|
||||
//~| NOTE cannot assign twice to immutable
|
||||
//~| NOTE in this expansion of desugaring of drop and replace
|
||||
}
|
||||
|
||||
fn test_args(b: Box<i32>) { //~ HELP consider making this binding mutable
|
||||
//~| SUGGESTION mut b
|
||||
b = Box::new(2); //~ ERROR cannot assign to immutable argument `b`
|
||||
//~| NOTE cannot assign to immutable argument
|
||||
//~| NOTE in this expansion of desugaring of drop and replace
|
||||
}
|
||||
|
||||
fn main() {}
|
||||
|
||||
@ -10,7 +10,7 @@ LL | b = Box::new(2);
|
||||
| ^ cannot assign twice to immutable variable
|
||||
|
||||
error[E0384]: cannot assign twice to immutable variable `b`
|
||||
--> $DIR/issue-45199.rs:14:5
|
||||
--> $DIR/issue-45199.rs:15:5
|
||||
|
|
||||
LL | let b = Box::new(1);
|
||||
| -
|
||||
@ -22,7 +22,7 @@ LL | b = Box::new(2);
|
||||
| ^ cannot assign twice to immutable variable
|
||||
|
||||
error[E0384]: cannot assign to immutable argument `b`
|
||||
--> $DIR/issue-45199.rs:20:5
|
||||
--> $DIR/issue-45199.rs:22:5
|
||||
|
|
||||
LL | fn test_args(b: Box<i32>) {
|
||||
| - help: consider making this binding mutable: `mut b`
|
||||
|
||||
@ -5,7 +5,6 @@ fn main() {
|
||||
greeting = "DEALLOCATED".to_string();
|
||||
//~^ ERROR cannot assign
|
||||
drop(greeting);
|
||||
//~^ ERROR cannot move
|
||||
|
||||
println!("thread result: {:?}", res);
|
||||
}
|
||||
|
||||
@ -12,21 +12,6 @@ LL | greeting = "DEALLOCATED".to_string();
|
||||
LL | println!("thread result: {:?}", res);
|
||||
| --- borrow later used here
|
||||
|
||||
error[E0505]: cannot move out of `greeting` because it is borrowed
|
||||
--> $DIR/issue-58776-borrowck-scans-children.rs:7:10
|
||||
|
|
||||
LL | let res = (|| (|| &greeting)())();
|
||||
| -- -------- borrow occurs due to use in closure
|
||||
| |
|
||||
| borrow of `greeting` occurs here
|
||||
...
|
||||
LL | drop(greeting);
|
||||
| ^^^^^^^^ move out of `greeting` occurs here
|
||||
...
|
||||
LL | println!("thread result: {:?}", res);
|
||||
| --- borrow later used here
|
||||
error: aborting due to previous error
|
||||
|
||||
error: aborting due to 2 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0505, E0506.
|
||||
For more information about an error, try `rustc --explain E0505`.
|
||||
For more information about this error, try `rustc --explain E0506`.
|
||||
|
||||
@ -5,6 +5,7 @@ fn test() {
|
||||
drop(b);
|
||||
b = Box::new(2); //~ ERROR cannot assign twice to immutable variable `b`
|
||||
//~| NOTE cannot assign twice to immutable
|
||||
//~| NOTE in this expansion of desugaring of drop and replace
|
||||
drop(b);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user