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Run check_match and check_liveness when MIR is built instead of having an explicit phase for them

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This commit is contained in:
Oli Scherer 2023-02-16 10:06:59 +00:00
parent 5bb58a68de
commit 334423263a
18 changed files with 321 additions and 328 deletions
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21
compiler/rustc_interface/src/passes.rs
View File

@ -761,27 +761,6 @@ fn analysis(tcx: TyCtxt<'_>, (): ()) -> Result<()> {
// passes are timed inside typeck
rustc_hir_analysis::check_crate(tcx)?;
sess.time("misc_checking_2", || {
parallel!(
{
sess.time("match_checking", || {
tcx.hir().par_body_owners(|def_id| tcx.ensure().check_match(def_id))
});
},
{
sess.time("liveness_checking", || {
tcx.hir().par_body_owners(|def_id| {
// this must run before MIR dump, because
// "not all control paths return a value" is reported here.
//
// maybe move the check to a MIR pass?
tcx.ensure().check_liveness(def_id);
});
});
}
);
});
sess.time("MIR_borrow_checking", || {
tcx.hir().par_body_owners(|def_id| tcx.ensure().mir_borrowck(def_id));
});

7
compiler/rustc_mir_build/src/build/mod.rs
View File

@ -51,6 +51,13 @@ fn mir_build(tcx: TyCtxt<'_>, def: LocalDefId) -> Body<'_> {
// of `mir_build`, so now we can steal it
let thir = thir.steal();
tcx.ensure().check_match(def);
// this must run before MIR dump, because
// "not all control paths return a value" is reported here.
//
// maybe move the check to a MIR pass?
tcx.ensure().check_liveness(def);
match thir.body_type {
thir::BodyTy::Fn(fn_sig) => construct_fn(tcx, def, &thir, expr, fn_sig),
thir::BodyTy::Const(ty) => construct_const(tcx, def, &thir, expr, ty),

10
compiler/rustc_passes/src/liveness.rs
View File

@ -98,6 +98,7 @@ use rustc_middle::ty::query::Providers;
use rustc_middle::ty::{self, RootVariableMinCaptureList, Ty, TyCtxt};
use rustc_session::lint;
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_span::DUMMY_SP;
use rustc_span::{BytePos, Span};
use std::collections::VecDeque;
@ -586,8 +587,13 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
}
fn assigned_on_exit(&self, ln: LiveNode, var: Variable) -> bool {
let successor = self.successors[ln].unwrap();
self.assigned_on_entry(successor, var)
match self.successors[ln] {
Some(successor) => self.assigned_on_entry(successor, var),
None => {
self.ir.tcx.sess.delay_span_bug(DUMMY_SP, "no successor");
true
}
}
}
fn write_vars<F>(&self, wr: &mut dyn Write, mut test: F) -> io::Result<()>

6
tests/mir-opt/const_promotion_extern_static.FOO-promoted[0].SimplifyCfg-elaborate-drops.after.mir
View File

@ -7,10 +7,10 @@ promoted[0] in FOO: &[&i32; 1] = {
let mut _3: *const i32; // in scope 0 at $DIR/const_promotion_extern_static.rs:+0:42: +0:43
bb0: {
_3 = const {alloc2: *const i32}; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:42: +0:43
_3 = const {alloc3: *const i32}; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:42: +0:43
// mir::Constant
// + span: $DIR/const_promotion_extern_static.rs:13:42: 13:43
// + literal: Const { ty: *const i32, val: Value(Scalar(alloc2)) }
// + literal: Const { ty: *const i32, val: Value(Scalar(alloc3)) }
_2 = &(*_3); // scope 0 at $DIR/const_promotion_extern_static.rs:+0:41: +0:43
_1 = [move _2]; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:31: +0:46
_0 = &_1; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:31: +0:55
@ -18,4 +18,4 @@ promoted[0] in FOO: &[&i32; 1] = {
}
}
alloc2 (extern static: X)
alloc3 (extern static: X)

6
tests/mir-opt/const_promotion_extern_static.FOO.PromoteTemps.diff
View File

@ -18,11 +18,11 @@
- StorageLive(_3); // scope 0 at $DIR/const_promotion_extern_static.rs:+0:31: +0:46
- StorageLive(_4); // scope 0 at $DIR/const_promotion_extern_static.rs:+0:32: +0:45
- StorageLive(_5); // scope 1 at $DIR/const_promotion_extern_static.rs:+0:42: +0:43
- _5 = const {alloc2: *const i32}; // scope 1 at $DIR/const_promotion_extern_static.rs:+0:42: +0:43
- _5 = const {alloc3: *const i32}; // scope 1 at $DIR/const_promotion_extern_static.rs:+0:42: +0:43
+ _6 = const _; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:31: +0:55
// mir::Constant
- // + span: $DIR/const_promotion_extern_static.rs:13:42: 13:43
- // + literal: Const { ty: *const i32, val: Value(Scalar(alloc2)) }
- // + literal: Const { ty: *const i32, val: Value(Scalar(alloc3)) }
- _4 = &(*_5); // scope 1 at $DIR/const_promotion_extern_static.rs:+0:41: +0:43
- _3 = [move _4]; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:31: +0:46
- _2 = &_3; // scope 0 at $DIR/const_promotion_extern_static.rs:+0:31: +0:55
@ -50,5 +50,5 @@
}
}
-
- alloc2 (extern static: X)
- alloc3 (extern static: X)

32
tests/ui/borrowck/bindings-after-at-or-patterns-slice-patterns-box-patterns.stderr
View File

@ -1,19 +1,3 @@
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:36:9
|
LL | ref foo @ [.., ref mut bar] => (),
| ^^^^^^^ ----------- value is mutably borrowed by `bar` here
| |
| value is borrowed by `foo` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:120:9
|
LL | ref foo @ Some(box ref mut s) => (),
| ^^^^^^^ --------- value is mutably borrowed by `s` here
| |
| value is borrowed by `foo` here
error[E0382]: borrow of moved value: `x`
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:18:5
|
@ -43,6 +27,14 @@ LL | &x;
LL | drop(r);
| - mutable borrow later used here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:36:9
|
LL | ref foo @ [.., ref mut bar] => (),
| ^^^^^^^ ----------- value is mutably borrowed by `bar` here
| |
| value is borrowed by `foo` here
error[E0502]: cannot borrow `x` as mutable because it is also borrowed as immutable
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:50:5
|
@ -120,6 +112,14 @@ LL | &mut x;
LL | drop(r);
| - immutable borrow later used here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:120:9
|
LL | ref foo @ Some(box ref mut s) => (),
| ^^^^^^^ --------- value is mutably borrowed by `s` here
| |
| value is borrowed by `foo` here
error[E0382]: borrow of moved value: `x`
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:134:5
|

28
tests/ui/closures/2229_closure_analysis/match/pattern-matching-should-fail.stderr
View File

@ -1,17 +1,3 @@
error[E0004]: non-exhaustive patterns: type `u8` is non-empty
--> $DIR/pattern-matching-should-fail.rs:67:23
|
LL | let c1 = || match x { };
| ^
|
= note: the matched value is of type `u8`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
|
LL ~ let c1 = || match x {
LL + _ => todo!(),
LL ~ };
|
error[E0381]: used binding `x` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:8:23
|
@ -69,6 +55,20 @@ LL | let t: !;
LL | match t { };
| ^ `t` used here but it isn't initialized
error[E0004]: non-exhaustive patterns: type `u8` is non-empty
--> $DIR/pattern-matching-should-fail.rs:67:23
|
LL | let c1 = || match x { };
| ^
|
= note: the matched value is of type `u8`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
|
LL ~ let c1 = || match x {
LL + _ => todo!(),
LL ~ };
|
error[E0381]: used binding `x` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:67:23
|

12
tests/ui/lint/lint-uppercase-variables.stderr
View File

@ -12,12 +12,6 @@ error[E0170]: pattern binding `Foo` is named the same as one of the variants of
LL | let Foo = foo::Foo::Foo;
| ^^^ help: to match on the variant, qualify the path: `foo::Foo::Foo`
error[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo`
--> $DIR/lint-uppercase-variables.rs:33:17
|
LL | fn in_param(Foo: foo::Foo) {}
| ^^^ help: to match on the variant, qualify the path: `foo::Foo::Foo`
warning: unused variable: `Foo`
--> $DIR/lint-uppercase-variables.rs:22:9
|
@ -37,6 +31,12 @@ warning: unused variable: `Foo`
LL | let Foo = foo::Foo::Foo;
| ^^^ help: if this is intentional, prefix it with an underscore: `_Foo`
error[E0170]: pattern binding `Foo` is named the same as one of the variants of the type `foo::Foo`
--> $DIR/lint-uppercase-variables.rs:33:17
|
LL | fn in_param(Foo: foo::Foo) {}
| ^^^ help: to match on the variant, qualify the path: `foo::Foo::Foo`
warning: unused variable: `Foo`
--> $DIR/lint-uppercase-variables.rs:33:17
|

24
tests/ui/lint/rfc-2383-lint-reason/expect_nested_lint_levels.stderr
View File

@ -1,15 +1,3 @@
error: unused variable: `this_is_my_function`
--> $DIR/expect_nested_lint_levels.rs:48:9
|
LL | let this_is_my_function = 3;
| ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_this_is_my_function`
|
note: the lint level is defined here
--> $DIR/expect_nested_lint_levels.rs:45:10
|
LL | #[forbid(unused_variables)]
| ^^^^^^^^^^^^^^^^
warning: variable does not need to be mutable
--> $DIR/expect_nested_lint_levels.rs:36:13
|
@ -25,6 +13,18 @@ note: the lint level is defined here
LL | unused_mut,
| ^^^^^^^^^^
error: unused variable: `this_is_my_function`
--> $DIR/expect_nested_lint_levels.rs:48:9
|
LL | let this_is_my_function = 3;
| ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_this_is_my_function`
|
note: the lint level is defined here
--> $DIR/expect_nested_lint_levels.rs:45:10
|
LL | #[forbid(unused_variables)]
| ^^^^^^^^^^^^^^^^
warning: this lint expectation is unfulfilled
--> $DIR/expect_nested_lint_levels.rs:7:5
|

12
tests/ui/lint/rfc-2383-lint-reason/force_warn_expected_lints_fulfilled.stderr
View File

@ -12,12 +12,6 @@ warning: unused variable: `fox_name`
LL | let fox_name = "Sir Nibbles";
| ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fox_name`
warning: unused variable: `this_should_fulfill_the_expectation`
--> $DIR/force_warn_expected_lints_fulfilled.rs:43:9
|
LL | let this_should_fulfill_the_expectation = "The `#[allow]` has no power here";
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_this_should_fulfill_the_expectation`
warning: variable does not need to be mutable
--> $DIR/force_warn_expected_lints_fulfilled.rs:32:9
|
@ -28,6 +22,12 @@ LL | let mut what_does_the_fox_say = "*ding* *deng* *dung*";
|
= note: requested on the command line with `--force-warn unused-mut`
warning: unused variable: `this_should_fulfill_the_expectation`
--> $DIR/force_warn_expected_lints_fulfilled.rs:43:9
|
LL | let this_should_fulfill_the_expectation = "The `#[allow]` has no power here";
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_this_should_fulfill_the_expectation`
warning: denote infinite loops with `loop { ... }`
--> $DIR/force_warn_expected_lints_fulfilled.rs:10:5
|

12
tests/ui/lint/unused/lint-unused-variables.stderr
View File

@ -10,18 +10,18 @@ note: the lint level is defined here
LL | #![deny(unused_variables)]
| ^^^^^^^^^^^^^^^^
error: unused variable: `b`
--> $DIR/lint-unused-variables.rs:14:5
|
LL | b: i32,
| ^ help: if this is intentional, prefix it with an underscore: `_b`
error: unused variable: `a`
--> $DIR/lint-unused-variables.rs:22:9
|
LL | a: i32,
| ^ help: if this is intentional, prefix it with an underscore: `_a`
error: unused variable: `b`
--> $DIR/lint-unused-variables.rs:14:5
|
LL | b: i32,
| ^ help: if this is intentional, prefix it with an underscore: `_b`
error: unused variable: `b`
--> $DIR/lint-unused-variables.rs:29:9
|

53
tests/ui/liveness/liveness-consts.stderr
View File

@ -1,10 +1,9 @@
warning: variable `a` is assigned to, but never used
--> $DIR/liveness-consts.rs:7:13
warning: unused variable: `e`
--> $DIR/liveness-consts.rs:24:13
|
LL | let mut a = 0;
| ^
LL | let e = 1;
| ^ help: if this is intentional, prefix it with an underscore: `_e`
|
= note: consider using `_a` instead
note: the lint level is defined here
--> $DIR/liveness-consts.rs:2:9
|
@ -12,21 +11,6 @@ LL | #![warn(unused)]
| ^^^^^^
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
warning: value assigned to `b` is never read
--> $DIR/liveness-consts.rs:17:5
|
LL | b += 1;
| ^
|
= help: maybe it is overwritten before being read?
= note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
warning: unused variable: `e`
--> $DIR/liveness-consts.rs:24:13
|
LL | let e = 1;
| ^ help: if this is intentional, prefix it with an underscore: `_e`
warning: unused variable: `s`
--> $DIR/liveness-consts.rs:33:24
|
@ -39,6 +23,29 @@ warning: unused variable: `z`
LL | pub fn f(x: [u8; { let s = 17; 100 }]) -> [u8; { let z = 18; 100 }] {
| ^ help: if this is intentional, prefix it with an underscore: `_z`
warning: unused variable: `z`
--> $DIR/liveness-consts.rs:60:13
|
LL | let z = 42;
| ^ help: if this is intentional, prefix it with an underscore: `_z`
warning: variable `a` is assigned to, but never used
--> $DIR/liveness-consts.rs:7:13
|
LL | let mut a = 0;
| ^
|
= note: consider using `_a` instead
warning: value assigned to `b` is never read
--> $DIR/liveness-consts.rs:17:5
|
LL | b += 1;
| ^
|
= help: maybe it is overwritten before being read?
= note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
warning: value assigned to `t` is never read
--> $DIR/liveness-consts.rs:42:9
|
@ -53,11 +60,5 @@ warning: unused variable: `w`
LL | let w = 10;
| ^ help: if this is intentional, prefix it with an underscore: `_w`
warning: unused variable: `z`
--> $DIR/liveness-consts.rs:60:13
|
LL | let z = 42;
| ^ help: if this is intentional, prefix it with an underscore: `_z`
warning: 8 warnings emitted

16
tests/ui/pattern/bindings-after-at/borrowck-pat-at-and-box.stderr
View File

@ -54,14 +54,6 @@ LL | ref mut a @ box ref b => {
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-at-and-box.rs:54:11
|
LL | fn f5(ref mut a @ box ref b: Box<NC>) {
| ^^^^^^^^^ ----- value is borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-at-and-box.rs:31:9
|
@ -120,6 +112,14 @@ LL | ref mut a @ box ref b => {
LL | drop(b);
| - immutable borrow later used here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-at-and-box.rs:54:11
|
LL | fn f5(ref mut a @ box ref b: Box<NC>) {
| ^^^^^^^^^ ----- value is borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-at-and-box.rs:54:11
|

144
tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref-inverse.stderr
View File

@ -286,78 +286,6 @@ help: borrow this binding in the pattern to avoid moving the value
LL | ref mut a @ Some([ref b, ref mut c]) => {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:11:11
|
LL | fn f1(a @ ref b: U) {}
| ^ ----- value borrowed here after move
| |
| value moved into `a` here
| move occurs because `a` has type `U` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f1(ref a @ ref b: U) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11
|
LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| ^^^^^ ----- ----- value borrowed here after move
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `(U, U)` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f2(ref mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:20
|
LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| ^ ----- value borrowed here after move
| |
| value moved into `b` here
| move occurs because `b` has type `U` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f2(mut a @ (ref b @ ref c, mut d @ ref e): (U, U)) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:31
|
LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| ^^^^^ ----- value borrowed here after move
| |
| value moved into `d` here
| move occurs because `d` has type `U` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f2(mut a @ (b @ ref c, ref mut d @ ref e): (U, U)) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:19:11
|
LL | fn f3(a @ [ref mut b, ref c]: [U; 2]) {}
| ^ --------- ----- value borrowed here after move
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `[U; 2]` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f3(ref a @ [ref mut b, ref c]: [U; 2]) {}
| +++
error[E0382]: use of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:24:9
|
@ -447,6 +375,63 @@ LL | mut a @ Some([ref b, ref mut c]) => {}
| |
| value moved here
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:11:11
|
LL | fn f1(a @ ref b: U) {}
| ^ ----- value borrowed here after move
| |
| value moved into `a` here
| move occurs because `a` has type `U` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f1(ref a @ ref b: U) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11
|
LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| ^^^^^ ----- ----- value borrowed here after move
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `(U, U)` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f2(ref mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:20
|
LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| ^ ----- value borrowed here after move
| |
| value moved into `b` here
| move occurs because `b` has type `U` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f2(mut a @ (ref b @ ref c, mut d @ ref e): (U, U)) {}
| +++
error: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:31
|
LL | fn f2(mut a @ (b @ ref c, mut d @ ref e): (U, U)) {}
| ^^^^^ ----- value borrowed here after move
| |
| value moved into `d` here
| move occurs because `d` has type `U` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f2(mut a @ (b @ ref c, ref mut d @ ref e): (U, U)) {}
| +++
error[E0382]: use of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:14:11
|
@ -457,6 +442,21 @@ 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: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref-inverse.rs:19:11
|
LL | fn f3(a @ [ref mut b, ref c]: [U; 2]) {}
| ^ --------- ----- value borrowed here after move
| | |
| | value borrowed here after move
| value moved into `a` here
| move occurs because `a` has type `[U; 2]` which does not implement the `Copy` trait
|
help: borrow this binding in the pattern to avoid moving the value
|
LL | fn f3(ref a @ [ref mut b, ref c]: [U; 2]) {}
| +++
error: aborting due to 33 previous errors
For more information about this error, try `rustc --explain E0382`.

84
tests/ui/pattern/bindings-after-at/borrowck-pat-by-move-and-ref.stderr
View File

@ -166,48 +166,6 @@ LL | ref mut a @ Some([b, mut c]) => {}
| | value is moved into `b` here
| value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:11:11
|
LL | fn f1(ref a @ b: U) {}
| ^^^^^ - value is moved into `b` here
| |
| value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:11
|
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| ^^^^^ ----- - value is moved into `e` here
| | |
| | value is moved into `c` here
| value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:20
|
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| ^^^^^ ----- value is moved into `c` here
| |
| value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:35
|
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| ^^^^^ - value is moved into `e` here
| |
| value is borrowed by `d` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:20:11
|
LL | fn f3(ref mut a @ [b, mut c]: [U; 2]) {}
| ^^^^^^^^^ - ----- value is moved into `c` here
| | |
| | value is moved into `b` here
| value is mutably borrowed by `a` here
error[E0382]: borrow of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:30:9
|
@ -306,6 +264,14 @@ help: borrow this binding in the pattern to avoid moving the value
LL | ref a @ Some((ref b @ mut c, ref d @ ref e)) => {}
| +++
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:11:11
|
LL | fn f1(ref a @ b: U) {}
| ^^^^^ - value is moved into `b` here
| |
| value is borrowed by `a` here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:11:11
|
@ -315,6 +281,31 @@ LL | fn f1(ref a @ b: U) {}
| value borrowed here after move
| move occurs because value has type `U`, which does not implement the `Copy` trait
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:11
|
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| ^^^^^ ----- - value is moved into `e` here
| | |
| | value is moved into `c` here
| value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:20
|
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| ^^^^^ ----- value is moved into `c` here
| |
| value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:35
|
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| ^^^^^ - value is moved into `e` here
| |
| value is borrowed by `d` here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:20
|
@ -335,6 +326,15 @@ LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
|
= note: move occurs because value has type `U`, which does not implement the `Copy` trait
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:20:11
|
LL | fn f3(ref mut a @ [b, mut c]: [U; 2]) {}
| ^^^^^^^^^ - ----- value is moved into `c` here
| | |
| | value is moved into `b` here
| value is mutably borrowed by `a` here
error[E0382]: borrow of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:20:11
|

82
tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr
View File

@ -221,47 +221,6 @@ LL | let ref mut a @ (ref b, ref c) = (U, U);
| | value is borrowed by `b` here
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:22:11
|
LL | fn f1(ref a @ ref mut b: U) {}
| ^^^^^ --------- value is mutably borrowed by `b` here
| |
| value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:24:11
|
LL | fn f2(ref mut a @ ref b: U) {}
| ^^^^^^^^^ ----- value is borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:26:11
|
LL | fn f3(ref a @ [ref b, ref mut mid @ .., ref c]: [U; 4]) {}
| ^^^^^ ----------- value is mutably borrowed by `mid` here
| |
| value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:22
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ^^^^^ --------- - value is moved into `c` here
| | |
| | value is mutably borrowed by `b` here
| value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ^^^^^^^^^ - value is moved into `c` here
| |
| value is mutably borrowed by `b` here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:8:31
|
@ -398,6 +357,47 @@ LL |
LL | *b = U;
| ------ mutable borrow later used here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:22:11
|
LL | fn f1(ref a @ ref mut b: U) {}
| ^^^^^ --------- value is mutably borrowed by `b` here
| |
| value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:24:11
|
LL | fn f2(ref mut a @ ref b: U) {}
| ^^^^^^^^^ ----- value is borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:26:11
|
LL | fn f3(ref a @ [ref b, ref mut mid @ .., ref c]: [U; 4]) {}
| ^^^^^ ----------- value is mutably borrowed by `mid` here
| |
| value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:22
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ^^^^^ --------- - value is moved into `c` here
| | |
| | value is mutably borrowed by `b` here
| value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ^^^^^^^^^ - value is moved into `c` here
| |
| value is mutably borrowed by `b` here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30
|

88
tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-twice.stderr
View File

@ -194,50 +194,6 @@ LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:8:11
|
LL | fn f1(ref mut a @ ref mut b: U) {}
| ^^^^^^^^^ --------- value is mutably borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:10:11
|
LL | fn f2(ref mut a @ ref mut b: U) {}
| ^^^^^^^^^ --------- value is mutably borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:13:9
|
LL | ref mut a @ [
| ^^^^^^^^^ value is mutably borrowed by `a` here
LL |
LL | [ref b @ .., _],
| ----- value is borrowed by `b` here
LL | [_, ref mut mid @ ..],
| ----------- value is mutably borrowed by `mid` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:21:22
|
LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| ^^^^^^^^^ --------- - value is moved into `c` here
| | |
| | value is mutably borrowed by `b` here
| value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-twice.rs:21:34
|
LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| ^^^^^^^^^ - value is moved into `c` here
| |
| value is mutably borrowed by `b` here
error[E0499]: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:29:9
|
@ -304,6 +260,50 @@ LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
LL | drop(a);
| - first borrow later used here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:8:11
|
LL | fn f1(ref mut a @ ref mut b: U) {}
| ^^^^^^^^^ --------- value is mutably borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:10:11
|
LL | fn f2(ref mut a @ ref mut b: U) {}
| ^^^^^^^^^ --------- value is mutably borrowed by `b` here
| |
| value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:13:9
|
LL | ref mut a @ [
| ^^^^^^^^^ value is mutably borrowed by `a` here
LL |
LL | [ref b @ .., _],
| ----- value is borrowed by `b` here
LL | [_, ref mut mid @ ..],
| ----------- value is mutably borrowed by `mid` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:21:22
|
LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| ^^^^^^^^^ --------- - value is moved into `c` here
| | |
| | value is mutably borrowed by `b` here
| value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-twice.rs:21:34
|
LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| ^^^^^^^^^ - value is moved into `c` here
| |
| value is mutably borrowed by `b` here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-twice.rs:21:34
|

12
tests/ui/rfc-2565-param-attrs/param-attrs-cfg.stderr
View File

@ -10,6 +10,12 @@ note: the lint level is defined here
LL | #![deny(unused_variables)]
| ^^^^^^^^^^^^^^^^
error: unused variable: `a`
--> $DIR/param-attrs-cfg.rs:41:27
|
LL | #[cfg(something)] a: i32,
| ^ help: if this is intentional, prefix it with an underscore: `_a`
error: unused variable: `b`
--> $DIR/param-attrs-cfg.rs:30:23
|
@ -22,12 +28,6 @@ error: unused variable: `c`
LL | #[cfg_attr(nothing, cfg(nothing))] c: i32,
| ^ help: if this is intentional, prefix it with an underscore: `_c`
error: unused variable: `a`
--> $DIR/param-attrs-cfg.rs:41:27
|
LL | #[cfg(something)] a: i32,
| ^ help: if this is intentional, prefix it with an underscore: `_a`
error: unused variable: `b`
--> $DIR/param-attrs-cfg.rs:48:27
|