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preserve bindings order for Some

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This commit is contained in:
Vishnunarayan K I 2020-11-03 12:15:41 +05:30
parent 6bdce7bedd
commit f422e811e4
19 changed files with 253 additions and 272 deletions
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33
compiler/rustc_mir_build/src/build/matches/simplify.rs
View File

@ -45,6 +45,26 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
) -> bool {
// repeatedly simplify match pairs until fixed point is reached
debug!("simplify_candidate(candidate={:?})", candidate);
// exisiting_bindings and new_bindings exists to keep the semantics in order
// reversing the binding order for bindings after `@` change binding order in places
// it shouldn't be changed, for example `let (Some(a), Some(b)) = (x, y)`
//
// To avoid this, the binding occurs in the following manner:
// * the bindings for one iteration of the following loop occurs in order (i.e. left to
// right)
// * the bindings from the previous iteration of the loop is prepended to the bindings from
// the current iteration (in the implementation this is done by mem::swap and extend)
// * after all iterations, these new bindings are then appended to the bindings that were
// prexisting (i.e. `candidate.binding` when the function was called).
//
// example:
// candidate.bindings = [1, 2, 3]
// binding in iter 1: [4, 5]
// binding in iter 2: [6, 7]
//
// final binding: [1, 2, 3, 6, 7, 4, 5]
let mut exisiting_bindings = mem::take(&mut candidate.bindings);
let mut new_bindings = Vec::new();
loop {
let match_pairs = mem::take(&mut candidate.match_pairs);
@ -52,13 +72,15 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
if let [MatchPair { pattern: Pat { kind: box PatKind::Or { pats }, .. }, place }] =
*match_pairs
{
exisiting_bindings.extend_from_slice(&new_bindings);
mem::swap(&mut candidate.bindings, &mut exisiting_bindings);
candidate.subcandidates = self.create_or_subcandidates(candidate, place, pats);
return true;
}
let mut changed = false;
for match_pair in match_pairs {
match self.simplify_match_pair(match_pair, candidate, &mut new_bindings) {
match self.simplify_match_pair(match_pair, candidate) {
Ok(()) => {
changed = true;
}
@ -80,11 +102,13 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
// let z = x.copy_field;
// let y = x;
// }
new_bindings.extend_from_slice(&candidate.bindings);
candidate.bindings.extend_from_slice(&new_bindings);
mem::swap(&mut candidate.bindings, &mut new_bindings);
new_bindings.clear();
candidate.bindings.clear();
if !changed {
exisiting_bindings.extend_from_slice(&new_bindings);
mem::swap(&mut candidate.bindings, &mut exisiting_bindings);
// Move or-patterns to the end, because they can result in us
// creating additional candidates, so we want to test them as
// late as possible.
@ -124,7 +148,6 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
&mut self,
match_pair: MatchPair<'pat, 'tcx>,
candidate: &mut Candidate<'pat, 'tcx>,
bindings: &mut Vec<Binding<'tcx>>,
) -> Result<(), MatchPair<'pat, 'tcx>> {
let tcx = self.hir.tcx();
match *match_pair.pattern.kind {
@ -152,7 +175,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
}
PatKind::Binding { name, mutability, mode, var, ty, ref subpattern, is_primary: _ } => {
bindings.push(Binding {
candidate.bindings.push(Binding {
name,
mutability,
span: match_pair.pattern.span,

6
src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
View File

@ -52,13 +52,13 @@
- }
-
- bb3: {
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25
_9 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25
StorageLive(_8); // scope 0 at $DIR/early_otherwise_branch.rs:5:15: 5:16
_8 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:5:15: 5:16
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25
_9 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25
_0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch.rs:5:31: 5:32
StorageDead(_8); // scope 0 at $DIR/early_otherwise_branch.rs:5:31: 5:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch.rs:5:31: 5:32
StorageDead(_8); // scope 0 at $DIR/early_otherwise_branch.rs:5:31: 5:32
- goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 7:6
+ goto -> bb3; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 7:6
}

6
src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
View File

@ -59,13 +59,13 @@
-
- bb4: {
+ bb2: {
StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25
_10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch.rs:13:15: 13:16
_9 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:13:15: 13:16
StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25
_10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25
_0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch.rs:13:31: 13:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch.rs:13:31: 13:32
StorageDead(_10); // scope 0 at $DIR/early_otherwise_branch.rs:13:31: 13:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch.rs:13:31: 13:32
- goto -> bb6; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6
+ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6
}

12
src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
View File

@ -71,16 +71,16 @@
- bb4: {
+ bb3: {
StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34
_13 = (((_4.2: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34
StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25
_12 = (((_4.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25
StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:15: 6:16
_11 = (((_4.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:15: 6:16
StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25
_12 = (((_4.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25
StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34
_13 = (((_4.2: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34
_0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41
StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41
StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41
StorageDead(_13); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41
StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41
StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41
- goto -> bb5; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 8:6
+ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 8:6
}

40
src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.before-SimplifyBranches-final.after.diff
View File

@ -109,10 +109,10 @@
}
+ bb2: {
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
+ _16 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17
+ _15 = (((*(_4.0: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
+ _16 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
+ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49
+ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41
+ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41
@ -132,10 +132,10 @@
bb3: {
- _8 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30
- switchInt(move _8) -> [1_isize: bb7, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
+ _21 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17
+ _20 = (((*(_4.0: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
+ _21 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
+ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49
+ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41
+ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41
@ -155,10 +155,10 @@
bb4: {
- _9 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34
- switchInt(move _9) -> [2_isize: bb8, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
+ _26 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19
+ _25 = (((*(_4.0: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
+ _26 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
+ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55
+ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47
+ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47
@ -178,10 +178,10 @@
bb5: {
- _10 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34
- switchInt(move _10) -> [3_isize: bb9, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
+ _31 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19
+ _30 = (((*(_4.0: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
+ _31 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
+ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55
+ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47
+ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47
@ -199,10 +199,10 @@
}
bb6: {
- StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
- _13 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
- StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17
- _12 = (((*(_4.0: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17
- StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
- _13 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
- StorageLive(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49
- StorageLive(_15); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41
- _15 = _12; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41
@ -214,8 +214,8 @@
- ((_3 as Vw).0: f32) = move _14; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50
- discriminant(_3) = 0; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50
- StorageDead(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
- StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
- StorageDead(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
- StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
+ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7
+ discriminant(_0) = 0; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7
@ -225,10 +225,10 @@
}
bb7: {
- StorageLive(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
- _18 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
- StorageLive(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17
- _17 = (((*(_4.0: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17
- StorageLive(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
- _18 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
- StorageLive(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49
- StorageLive(_20); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41
- _20 = _17; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41
@ -240,16 +240,16 @@
- ((_3 as Vh).0: f32) = move _19; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50
- discriminant(_3) = 1; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50
- StorageDead(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
- StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
- StorageDead(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
- StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
- }
-
- bb8: {
- StorageLive(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
- _23 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
- StorageLive(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19
- _22 = (((*(_4.0: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19
- StorageLive(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
- _23 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
- StorageLive(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55
- StorageLive(_25); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47
- _25 = _22; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47
@ -261,16 +261,16 @@
- ((_3 as Vmin).0: f32) = move _24; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56
- discriminant(_3) = 2; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56
- StorageDead(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
- StorageDead(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
- StorageDead(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
- StorageDead(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
- }
-
- bb9: {
- StorageLive(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
- _28 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
- StorageLive(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19
- _27 = (((*(_4.0: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19
- StorageLive(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
- _28 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
- StorageLive(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55
- StorageLive(_30); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47
- _30 = _27; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47
@ -282,8 +282,8 @@
- ((_3 as Vmax).0: f32) = move _29; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56
- discriminant(_3) = 3; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56
- StorageDead(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
- StorageDead(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
- StorageDead(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
- StorageDead(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
- }
-

24
src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
View File

@ -109,10 +109,10 @@
-
- bb6: {
+ bb2: {
StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
_13 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17
_12 = (((*(_4.0: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17
StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
_13 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29
StorageLive(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49
StorageLive(_15); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41
_15 = _12; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41
@ -124,18 +124,18 @@
((_3 as Vw).0: f32) = move _14; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50
discriminant(_3) = 0; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50
StorageDead(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
StorageDead(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
+ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
}
- bb7: {
+ bb3: {
StorageLive(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
_18 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
StorageLive(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17
_17 = (((*(_4.0: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17
StorageLive(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
_18 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29
StorageLive(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49
StorageLive(_20); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41
_20 = _17; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41
@ -147,18 +147,18 @@
((_3 as Vh).0: f32) = move _19; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50
discriminant(_3) = 1; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50
StorageDead(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
StorageDead(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
+ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
}
- bb8: {
+ bb4: {
StorageLive(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
_23 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
StorageLive(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19
_22 = (((*(_4.0: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19
StorageLive(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
_23 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33
StorageLive(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55
StorageLive(_25); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47
_25 = _22; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47
@ -170,18 +170,18 @@
((_3 as Vmin).0: f32) = move _24; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56
discriminant(_3) = 2; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56
StorageDead(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
StorageDead(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
StorageDead(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
StorageDead(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
+ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
}
- bb9: {
+ bb5: {
StorageLive(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
_28 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
StorageLive(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19
_27 = (((*(_4.0: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19
StorageLive(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
_28 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33
StorageLive(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55
StorageLive(_30); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47
_30 = _27; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47
@ -193,8 +193,8 @@
((_3 as Vmax).0: f32) = move _29; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56
discriminant(_3) = 3; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56
StorageDead(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
StorageDead(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
StorageDead(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
StorageDead(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56
- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
+ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6
}

6
src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
View File

@ -56,13 +56,13 @@
}
bb4: {
StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25
_10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16
_9 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16
StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25
_10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25
_0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
StorageDead(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 13:6
}

6
src/test/mir-opt/early_otherwise_branch_noopt.noopt2.EarlyOtherwiseBranch.diff
View File

@ -42,13 +42,13 @@
}
bb3: {
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25
_9 = (((_3.1: std::option::Option<bool>) as Some).0: bool); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25
StorageLive(_8); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:15: 20:16
_8 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:15: 20:16
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25
_9 = (((_3.1: std::option::Option<bool>) as Some).0: bool); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25
_0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32
StorageDead(_8); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32
StorageDead(_8); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32
goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:5: 22:6
}

28
src/test/ui/issues/issue-12567.stderr
View File

@ -1,17 +1,3 @@
error[E0508]: cannot move out of type `[T]`, a non-copy slice
--> $DIR/issue-12567.rs:2:11
|
LL | match (l1, l2) {
| ^^^^^^^^ cannot move out of here
...
LL | (&[], &[hd, ..]) | (&[hd, ..], &[])
| -- data moved here
LL | => println!("one empty"),
LL | (&[hd1, ..], &[hd2, ..])
| --- ...and here
|
= note: move occurs because these variables have types that don't implement the `Copy` trait
error[E0508]: cannot move out of type `[T]`, a non-copy slice
--> $DIR/issue-12567.rs:2:11
|
@ -26,6 +12,20 @@ LL | (&[hd1, ..], &[hd2, ..])
|
= note: move occurs because these variables have types that don't implement the `Copy` trait
error[E0508]: cannot move out of type `[T]`, a non-copy slice
--> $DIR/issue-12567.rs:2:11
|
LL | match (l1, l2) {
| ^^^^^^^^ cannot move out of here
...
LL | (&[], &[hd, ..]) | (&[hd, ..], &[])
| -- data moved here
LL | => println!("one empty"),
LL | (&[hd1, ..], &[hd2, ..])
| --- ...and here
|
= note: move occurs because these variables have types that don't implement the `Copy` trait
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0508`.

4
src/test/ui/pattern/bindings-after-at/borrowck-move-and-move.rs
View File

@ -17,8 +17,8 @@ fn main() {
let a @ (b, c) = (u(), u()); //~ ERROR use of partially moved value
match Ok(U) {
a @ Ok(b) | a @ Err(b) => {} //~ ERROR use of partially moved value
//~^ ERROR use of partially moved value
a @ Ok(b) | a @ Err(b) => {} //~ ERROR use of moved value
//~^ ERROR use of moved value
}
fn fun(a @ b: U) {} //~ ERROR use of moved value

36
src/test/ui/pattern/bindings-after-at/borrowck-move-and-move.stderr
View File

@ -29,35 +29,27 @@ LL | let a @ (b, c) = (u(), u());
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
error[E0382]: use of partially moved value
--> $DIR/borrowck-move-and-move.rs:20:9
error[E0382]: use of moved value
--> $DIR/borrowck-move-and-move.rs:20:16
|
LL | match Ok(U) {
| ----- move occurs because value has type `std::result::Result<U, U>`, which does not implement the `Copy` trait
LL | a @ Ok(b) | a @ Err(b) => {}
| ^^^^^^^-^
| -------^-
| | |
| | value partially moved here
| value used here after partial move
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | a @ Ok(ref b) | a @ Err(b) => {}
| ^^^
| | value used here after move
| value moved here
error[E0382]: use of partially moved value
--> $DIR/borrowck-move-and-move.rs:20:21
error[E0382]: use of moved value
--> $DIR/borrowck-move-and-move.rs:20:29
|
LL | match Ok(U) {
| ----- move occurs because value has type `std::result::Result<U, U>`, which does not implement the `Copy` trait
LL | a @ Ok(b) | a @ Err(b) => {}
| ^^^^^^^^-^
| --------^-
| | |
| | value partially moved here
| value used here after partial move
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | a @ Ok(b) | a @ Err(ref b) => {}
| ^^^
| | value used here after move
| value moved here
error[E0382]: use of partially moved value
--> $DIR/borrowck-move-and-move.rs:27:9

7
src/test/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.rs
View File

@ -50,17 +50,19 @@ fn main() {
//~^ ERROR borrow of moved value
//~| ERROR borrow of moved value
//~| ERROR borrow of moved value
//~| ERROR use of partially moved value
//~| ERROR use of moved value
None => {}
}
match Some([U, U]) {
mut a @ Some([ref b, ref mut c]) => {}
//~^ ERROR borrow of moved value
//~| ERROR borrow of moved value
None => {}
}
match Some(u()) {
a @ Some(ref b) => {}
//~^ ERROR borrow of moved value
//~| ERROR borrow of moved value
None => {}
}
match Some((u(), u())) {
@ -68,12 +70,13 @@ fn main() {
//~^ ERROR borrow of moved value
//~| ERROR borrow of moved value
//~| ERROR borrow of moved value
//~| ERROR use of partially moved value
//~| ERROR use of moved value
None => {}
}
match Some([u(), u()]) {
mut a @ Some([ref b, ref mut c]) => {}
//~^ ERROR borrow of moved value
//~| ERROR borrow of moved value
None => {}
}
}

79
src/test/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr
View File

@ -155,7 +155,7 @@ LL | mut a @ Some([ref b, ref mut c]) => {}
| move occurs because `a` has type `Option<[U; 2]>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:62:9
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:63:9
|
LL | a @ Some(ref b) => {}
| -^^^^^^^^-----^
@ -165,7 +165,7 @@ LL | a @ Some(ref b) => {}
| move occurs because `a` has type `Option<U>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:67:9
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:69:9
|
LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| -^^^^^^^^^^^^^^^^^---------^^^^^^-----^^
@ -176,7 +176,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| move occurs because `a` has type `Option<(U, U)>` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:67:19
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:69:19
|
LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| -----^^^---------
@ -186,7 +186,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| move occurs because `b` has type `U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:67:38
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:69:38
|
LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| -^^^-----
@ -196,7 +196,7 @@ LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| move occurs because `d` has type `U` which does not implement the `Copy` trait
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:75:9
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:77:9
|
LL | mut a @ Some([ref b, ref mut c]) => {}
| -----^^^^^^^^^-----^^---------^^
@ -280,35 +280,60 @@ LL | let a @ (mut b @ ref mut c, d @ ref e) = (u(), u());
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
error[E0382]: use of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:49:9
error[E0382]: use of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:49:38
|
LL | match Some((U, U)) {
| ------------ move occurs because value has type `Option<(U, U)>`, which does not implement the `Copy` trait
LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---------^^
| -----------------------------^^^^^^^^^--
| | |
| | value partially moved here
| value used here after partial move
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | a @ Some((mut b @ ref mut c, ref d @ ref e)) => {}
| ^^^
| | value used here after move
| value moved here
error[E0382]: use of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:67:9
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:57:30
|
LL | match Some([U, U]) {
| ------------ move occurs because value has type `Option<[U; 2]>`, which does not implement the `Copy` trait
LL | mut a @ Some([ref b, ref mut c]) => {}
| ---------------------^^^^^^^^^--
| | |
| | value borrowed here after move
| value moved here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:63:18
|
LL | match Some(u()) {
| --------- move occurs because value has type `Option<U>`, which does not implement the `Copy` trait
LL | a @ Some(ref b) => {}
| ---------^^^^^-
| | |
| | value borrowed here after move
| value moved here
error[E0382]: use of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:69:38
|
LL | match Some((u(), u())) {
| ---------------- move occurs because value has type `Option<(U, U)>`, which does not implement the `Copy` trait
LL | a @ Some((mut b @ ref mut c, d @ ref e)) => {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---------^^
| -----------------------------^^^^^^^^^--
| | |
| | value partially moved here
| value used here after partial move
| | value used here after move
| value moved here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:77:30
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | a @ Some((mut b @ ref mut c, ref d @ ref e)) => {}
| ^^^
LL | match Some([u(), u()]) {
| ---------------- move occurs because value has type `Option<[U; 2]>`, which does not implement the `Copy` trait
LL | mut a @ Some([ref b, ref mut c]) => {}
| ---------------------^^^^^^^^^--
| | |
| | value borrowed here after move
| value moved here
error[E0382]: use of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:16:11
@ -321,6 +346,6 @@ LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
error: aborting due to 30 previous errors
error: aborting due to 33 previous errors
For more information about this error, try `rustc --explain E0382`.

3
src/test/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.rs
View File

@ -60,13 +60,11 @@ fn main() {
match Some([U, U]) {
ref mut a @ Some([b, mut c]) => {}
//~^ ERROR cannot move out of value because it is borrowed
//~| ERROR borrow of partially moved value
None => {}
}
match Some(u()) {
ref a @ Some(b) => {}
//~^ ERROR cannot move out of value because it is borrowed
//~| ERROR borrow of partially moved value
None => {}
}
match Some((u(), u())) {
@ -81,7 +79,6 @@ fn main() {
match Some([u(), u()]) {
ref mut a @ Some([b, mut c]) => {}
//~^ ERROR cannot move out of value because it is borrowed
//~| ERROR borrow of partially moved value
None => {}
}
}

61
src/test/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.stderr
View File

@ -140,7 +140,7 @@ LL | ref mut a @ Some([b, mut c]) => {}
| value borrowed, by `a`, here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:67:9
--> $DIR/borrowck-pat-by-move-and-ref.rs:66:9
|
LL | ref a @ Some(b) => {}
| -----^^^^^^^^-^
@ -149,7 +149,7 @@ LL | ref a @ Some(b) => {}
| value borrowed, by `a`, here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:73:9
--> $DIR/borrowck-pat-by-move-and-ref.rs:71:9
|
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^^^^^^^^^^^^^^^-----^^^^^^^^^^-^^
@ -159,7 +159,7 @@ LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| value borrowed, by `a`, here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:73:23
--> $DIR/borrowck-pat-by-move-and-ref.rs:71:23
|
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^-----
@ -168,7 +168,7 @@ LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| value borrowed, by `b`, here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:73:38
--> $DIR/borrowck-pat-by-move-and-ref.rs:71:38
|
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^-
@ -177,7 +177,7 @@ LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| value borrowed, by `d`, here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:82:9
--> $DIR/borrowck-pat-by-move-and-ref.rs:80:9
|
LL | ref mut a @ Some([b, mut c]) => {}
| ---------^^^^^^^^^-^^-----^^
@ -286,38 +286,8 @@ LL | let ref mut a @ [b, mut c] = [u(), u()];
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
error[E0382]: borrow of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:61:9
|
LL | ref mut a @ Some([b, mut c]) => {}
| ^^^^^^^^^^^^^^^^^^^^^-----^^
| | |
| | value partially moved here
| value borrowed here after partial move
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | ref mut a @ Some([b, ref mut c]) => {}
| ^^^
error[E0382]: borrow of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:67:9
|
LL | ref a @ Some(b) => {}
| ^^^^^^^^^^^^^-^
| | |
| | value partially moved here
| value borrowed here after partial move
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | ref a @ Some(ref b) => {}
| ^^^
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:73:23
--> $DIR/borrowck-pat-by-move-and-ref.rs:71:23
|
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| ^^^^^^^^-----
@ -332,7 +302,7 @@ LL | ref a @ Some((ref b @ ref mut c, ref d @ e)) => {}
| ^^^
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:73:38
--> $DIR/borrowck-pat-by-move-and-ref.rs:71:38
|
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| ^^^^^^^^-
@ -346,21 +316,6 @@ help: borrow this field in the pattern to avoid moving the value
LL | ref a @ Some((ref b @ mut c, ref d @ ref e)) => {}
| ^^^
error[E0382]: borrow of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:82:9
|
LL | ref mut a @ Some([b, mut c]) => {}
| ^^^^^^^^^^^^^^^^^^^^^-----^^
| | |
| | value partially moved here
| value borrowed here after partial move
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
help: borrow this field in the pattern to avoid moving the value
|
LL | ref mut a @ Some([b, ref mut c]) => {}
| ^^^
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:13:11
|
@ -404,6 +359,6 @@ LL | fn f3(ref mut a @ [b, mut c]: [U; 2]) {}
|
= note: partial move occurs because value has type `U`, which does not implement the `Copy` trait
error: aborting due to 39 previous errors
error: aborting due to 36 previous errors
For more information about this error, try `rustc --explain E0382`.

10
src/test/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.rs
View File

@ -9,7 +9,7 @@ fn main() {
match &mut Some(1) {
ref mut z @ &mut Some(ref a) => {
//~^ ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
**z = None;
println!("{}", *a);
}
@ -78,8 +78,8 @@ fn main() {
ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
*b = U;
drop(a);
}
@ -90,8 +90,6 @@ fn main() {
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot assign to `*b`, as it is immutable for the pattern guard
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
_ => {}
}
match Ok(U) {
@ -105,8 +103,6 @@ fn main() {
ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot move out of `b` in pattern guard
//~| ERROR cannot move out of `b` in pattern guard
_ => {}

104
src/test/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr
View File

@ -155,7 +155,7 @@ LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false }
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:98:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:96:9
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ---------^^^^^^-----^
@ -164,7 +164,7 @@ LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); fa
| mutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:98:33
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:96:33
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ---------^^^^^^^-----^
@ -173,7 +173,7 @@ LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); fa
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:105:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:103:9
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| -----^^^^^^---------^
@ -182,7 +182,7 @@ LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:105:33
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:103:33
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| -----^^^^^^^---------^
@ -191,7 +191,7 @@ LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:115:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:111:9
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ---------^^^^^^-----^
@ -200,7 +200,7 @@ LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false
| mutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:115:33
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:111:33
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ---------^^^^^^^-----^
@ -209,7 +209,7 @@ LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:123:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:119:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
@ -219,7 +219,7 @@ LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:129:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:125:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
@ -229,7 +229,7 @@ LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:135:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:131:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
@ -239,7 +239,7 @@ LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:140:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:136:9
|
LL | let ref mut a @ (ref b, ref c) = (U, U);
| ---------^^^^-----^^-----^
@ -294,17 +294,17 @@ LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| | value moved into `c` here
| value borrowed, by `b`, here
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:10:9
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:10:31
|
LL | ref mut z @ &mut Some(ref a) => {
| ^^^^^^^^^^^^^^^^^^^^^^-----^
| ----------------------^^^^^-
| | |
| | immutable borrow occurs here
| mutable borrow occurs here
...
LL | println!("{}", *a);
| -- immutable borrow later used here
LL | **z = None;
| ---------- mutable borrow later used here
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:48:9
@ -330,47 +330,29 @@ LL | let ref a @ ref mut b = u();
LL | *b = u();
| -------- mutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:78:9
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:78:20
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| ^^^^^^^^^^^---------^
| -----------^^^^^^^^^-
| | |
| | mutable borrow occurs here
| immutable borrow occurs here
...
LL | *b = U;
| ------ mutable borrow later used here
LL | drop(a);
| - immutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:78:33
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:78:45
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| ^^^^^^^^^^^^---------^
| ------------^^^^^^^^^-
| | |
| | mutable borrow occurs here
| immutable borrow occurs here
...
LL | *b = U;
| ------ mutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:89:9
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| ^^^^^^^^^^^---------^ ------ mutable borrow later used here
| | |
| | mutable borrow occurs here
| immutable borrow occurs here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:89:33
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| ^^^^^^^^^^^^---------^ ------ mutable borrow later used here
| | |
| | mutable borrow occurs here
| immutable borrow occurs here
LL | drop(a);
| - immutable borrow later used here
error[E0594]: cannot assign to `*b`, as it is immutable for the pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:89:61
@ -381,33 +363,15 @@ LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false }
= note: variables bound in patterns are immutable until the end of the pattern guard
error[E0594]: cannot assign to `*a`, as it is immutable for the pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:98:61
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:96:61
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ^^^^^^^^^^^ cannot assign
|
= note: variables bound in patterns are immutable until the end of the pattern guard
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:105:9
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| ^^^^^^^^^^^---------^ - mutable borrow later used here
| | |
| | mutable borrow occurs here
| immutable borrow occurs here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:105:33
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| ^^^^^^^^^^^^---------^ - mutable borrow later used here
| | |
| | mutable borrow occurs here
| immutable borrow occurs here
error[E0507]: cannot move out of `b` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:105:66
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:103:66
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| ^ move occurs because `b` has type `&mut U`, which does not implement the `Copy` trait
@ -415,7 +379,7 @@ LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0507]: cannot move out of `b` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:105:66
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:103:66
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| ^ move occurs because `b` has type `&mut U`, which does not implement the `Copy` trait
@ -423,7 +387,7 @@ LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0507]: cannot move out of `a` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:115:66
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:111:66
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ^ move occurs because `a` has type `&mut std::result::Result<U, U>`, which does not implement the `Copy` trait
@ -431,7 +395,7 @@ LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0507]: cannot move out of `a` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:115:66
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:111:66
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ^ move occurs because `a` has type `&mut std::result::Result<U, U>`, which does not implement the `Copy` trait
@ -439,7 +403,7 @@ LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:123:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:119:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| ^^^^^^^^^---------^^^^^^^^^^^^
@ -451,7 +415,7 @@ LL | *b = U;
| ------ mutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:129:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:125:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| ^^^^^^^^^---------^^^^^^^^^^^^
@ -463,7 +427,7 @@ LL | *b = U;
| ------ mutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:135:9
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:131:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| ^^^^^^^^^---------^^^^^^^^^^^^
@ -484,7 +448,7 @@ LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| | value borrowed here after move
| move occurs because value has type `U`, which does not implement the `Copy` trait
error: aborting due to 51 previous errors
error: aborting due to 47 previous errors
Some errors have detailed explanations: E0382, E0502, E0507, E0594.
For more information about an error, try `rustc --explain E0382`.

6
src/test/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.rs
View File

@ -84,8 +84,6 @@ fn main() {
ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
//~^ ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
*b = U;
}
}
@ -93,6 +91,8 @@ fn main() {
ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
//~^ ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
*a = Err(U);
// FIXME: The binding name value used above makes for problematic diagnostics.
@ -103,6 +103,8 @@ fn main() {
ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
//~^ ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
//~| ERROR cannot borrow value as mutable more than once at a time
drop(a);
}
}

54
src/test/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr
View File

@ -168,7 +168,7 @@ LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| first mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:93:9
--> $DIR/borrowck-pat-ref-mut-twice.rs:91:9
|
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^---------^
@ -177,7 +177,7 @@ LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| first mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:93:37
--> $DIR/borrowck-pat-ref-mut-twice.rs:91:37
|
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^^---------^
@ -283,28 +283,52 @@ LL | *b = U;
| ------ first borrow later used here
error[E0499]: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:84:9
--> $DIR/borrowck-pat-ref-mut-twice.rs:91:24
|
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ^^^^^^^^^^^^^^^---------^
| ---------------^^^^^^^^^-
| | |
| | first mutable borrow occurs here
| second mutable borrow occurs here
| | second mutable borrow occurs here
| first mutable borrow occurs here
...
LL | *b = U;
| ------ first borrow later used here
LL | *a = Err(U);
| ----------- first borrow later used here
error[E0499]: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:84:37
--> $DIR/borrowck-pat-ref-mut-twice.rs:91:53
|
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ^^^^^^^^^^^^^^^^---------^
| ----------------^^^^^^^^^-
| | |
| | first mutable borrow occurs here
| second mutable borrow occurs here
| | second mutable borrow occurs here
| first mutable borrow occurs here
...
LL | *b = U;
| ------ first borrow later used here
LL | *a = Err(U);
| ----------- first borrow later used here
error[E0499]: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:103:24
|
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------------^^^^^^^^^-
| | |
| | second mutable borrow occurs here
| first mutable borrow occurs here
...
LL | drop(a);
| - first borrow later used here
error[E0499]: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:103:53
|
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ----------------^^^^^^^^^-
| | |
| | second mutable borrow occurs here
| first mutable borrow occurs here
...
LL | drop(a);
| - first borrow later used here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-twice.rs:23:34
@ -316,7 +340,7 @@ LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| | value borrowed here after move
| move occurs because value has type `U`, which does not implement the `Copy` trait
error: aborting due to 29 previous errors
error: aborting due to 31 previous errors
Some errors have detailed explanations: E0382, E0499.
For more information about an error, try `rustc --explain E0382`.