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| author | Esteban Küber <esteban@kuber.com.ar> | 2019-01-02 16:43:08 -0800 |
|---|---|---|
| committer | Esteban Küber <esteban@kuber.com.ar> | 2019-01-24 10:36:50 -0800 |
| commit | 5e9c8d7369ce2901d327ed2c1849417886ba7a86 (patch) | |
| tree | 349bb01cff5cce57d9f4a0422c269a7a43826f90 | |
| parent | 01f8e25b15f4ab157c8e7c9c56054df7595ec0e1 (diff) | |
| download | rust-5e9c8d7369ce2901d327ed2c1849417886ba7a86.tar.gz rust-5e9c8d7369ce2901d327ed2c1849417886ba7a86.zip | |
When using value after move, point at span of local
When trying to use a value after move, instead of using a note, point at the local declaration that has a type that doesn't implement `Copy` trait.
21 files changed, 116 insertions, 88 deletions
diff --git a/src/librustc_mir/borrow_check/error_reporting.rs b/src/librustc_mir/borrow_check/error_reporting.rs index 233db12b030..cbcf8c90fee 100644 --- a/src/librustc_mir/borrow_check/error_reporting.rs +++ b/src/librustc_mir/borrow_check/error_reporting.rs @@ -198,19 +198,31 @@ impl<'cx, 'gcx, 'tcx> MirBorrowckCtxt<'cx, 'gcx, 'tcx> { let place = &self.move_data.move_paths[mpi].place; let ty = place.ty(self.mir, self.infcx.tcx).to_ty(self.infcx.tcx); - let note_msg = match self.describe_place_with_options( - place, - IncludingDowncast(true), - ) { - Some(name) => format!("`{}`", name), + let opt_name = self.describe_place_with_options(place, IncludingDowncast(true)); + let note_msg = match opt_name { + Some(ref name) => format!("`{}`", name), None => "value".to_owned(), }; - - err.note(&format!( - "move occurs because {} has type `{}`, \ - which does not implement the `Copy` trait", - note_msg, ty - )); + let mut note = true; + for decl in &self.mir.local_decls { + if decl.ty == ty && decl.name.map(|x| x.to_string()) == opt_name { + err.span_label( + decl.source_info.span, + format!( + "move occurs because {} has type `{}`, \ + which does not implement the `Copy` trait", + note_msg, ty, + )); + note = false; + } + } + if note { + err.note(&format!( + "move occurs because {} has type `{}`, \ + which does not implement the `Copy` trait", + note_msg, ty + )); + } } if let Some((_, mut old_err)) = self.move_error_reported diff --git a/src/test/ui/borrowck/borrowck-asm.mir.stderr b/src/test/ui/borrowck/borrowck-asm.mir.stderr index 9c47845a528..86e4832b387 100644 --- a/src/test/ui/borrowck/borrowck-asm.mir.stderr +++ b/src/test/ui/borrowck/borrowck-asm.mir.stderr @@ -1,13 +1,14 @@ error[E0382]: use of moved value: `x` --> $DIR/borrowck-asm.rs:27:17 | +LL | let x = &mut 0isize; + | - move occurs because `x` has type `&mut isize`, which does not implement the `Copy` trait +LL | unsafe { LL | asm!("nop" : : "r"(x)); | - value moved here LL | } LL | let z = x; //[ast]~ ERROR use of moved value: `x` | ^ value used here after move - | - = note: move occurs because `x` has type `&mut isize`, which does not implement the `Copy` trait error[E0503]: cannot use `x` because it was mutably borrowed --> $DIR/borrowck-asm.rs:35:32 @@ -66,12 +67,13 @@ LL | let z = y; error[E0382]: use of moved value: `x` --> $DIR/borrowck-asm.rs:86:40 | +LL | let x = &mut 2; + | - move occurs because `x` has type `&mut i32`, which does not implement the `Copy` trait +LL | unsafe { LL | asm!("nop" : : "r"(x), "r"(x) ); //[ast]~ ERROR use of moved value | - ^ value used here after move | | | value moved here - | - = note: move occurs because `x` has type `&mut i32`, which does not implement the `Copy` trait error: aborting due to 7 previous errors diff --git a/src/test/ui/borrowck/borrowck-drop-from-guard.stderr b/src/test/ui/borrowck/borrowck-drop-from-guard.stderr index d395b7734f9..07b597f480f 100644 --- a/src/test/ui/borrowck/borrowck-drop-from-guard.stderr +++ b/src/test/ui/borrowck/borrowck-drop-from-guard.stderr @@ -1,13 +1,14 @@ error[E0382]: use of moved value: `my_str` --> $DIR/borrowck-drop-from-guard.rs:11:23 | +LL | let my_str = "hello".to_owned(); + | ------ move occurs because `my_str` has type `std::string::String`, which does not implement the `Copy` trait +LL | match Some(42) { LL | Some(_) if { drop(my_str); false } => {} | ------ value moved here LL | Some(_) => {} LL | None => { foo(my_str); } //~ ERROR [E0382] | ^^^^^^ value used here after move - | - = note: move occurs because `my_str` has type `std::string::String`, which does not implement the `Copy` trait error: aborting due to previous error diff --git a/src/test/ui/borrowck/borrowck-issue-48962.stderr b/src/test/ui/borrowck/borrowck-issue-48962.stderr index 9d53d82265e..de4894d5b52 100644 --- a/src/test/ui/borrowck/borrowck-issue-48962.stderr +++ b/src/test/ui/borrowck/borrowck-issue-48962.stderr @@ -1,22 +1,22 @@ error[E0382]: use of moved value: `src` --> $DIR/borrowck-issue-48962.rs:16:5 | +LL | let mut src = &mut node; + | ------- move occurs because `src` has type `&mut Node`, which does not implement the `Copy` trait LL | {src}; | --- value moved here LL | src.next = None; //~ ERROR use of moved value: `src` [E0382] | ^^^^^^^^ value used here after move - | - = note: move occurs because `src` has type `&mut Node`, which does not implement the `Copy` trait error[E0382]: use of moved value: `src` --> $DIR/borrowck-issue-48962.rs:22:5 | +LL | let mut src = &mut (22, 44); + | ------- move occurs because `src` has type `&mut (i32, i32)`, which does not implement the `Copy` trait LL | {src}; | --- value moved here LL | src.0 = 66; //~ ERROR use of moved value: `src` [E0382] | ^^^^^^^^^^ value used here after move - | - = note: move occurs because `src` has type `&mut (i32, i32)`, which does not implement the `Copy` trait error: aborting due to 2 previous errors diff --git a/src/test/ui/borrowck/borrowck-move-moved-value-into-closure.mir.stderr b/src/test/ui/borrowck/borrowck-move-moved-value-into-closure.mir.stderr index 24b9b4338a5..0789926563c 100644 --- a/src/test/ui/borrowck/borrowck-move-moved-value-into-closure.mir.stderr +++ b/src/test/ui/borrowck/borrowck-move-moved-value-into-closure.mir.stderr @@ -1,6 +1,9 @@ error[E0382]: use of moved value: `t` --> $DIR/borrowck-move-moved-value-into-closure.rs:14:12 | +LL | let t: Box<_> = box 3; + | - move occurs because `t` has type `std::boxed::Box<isize>`, which does not implement the `Copy` trait +LL | LL | call_f(move|| { *t + 1 }); | ------ - variable moved due to use in closure | | @@ -9,8 +12,6 @@ LL | call_f(move|| { *t + 1 }); //[ast]~ ERROR capture of moved value | ^^^^^^ - use occurs due to use in closure | | | value used here after move - | - = note: move occurs because `t` has type `std::boxed::Box<isize>`, which does not implement the `Copy` trait error: aborting due to previous error diff --git a/src/test/ui/borrowck/borrowck-reinit.stderr b/src/test/ui/borrowck/borrowck-reinit.stderr index 918452726a0..96f3981ac2f 100644 --- a/src/test/ui/borrowck/borrowck-reinit.stderr +++ b/src/test/ui/borrowck/borrowck-reinit.stderr @@ -11,12 +11,13 @@ LL | let _ = (1,x); //~ ERROR use of moved value: `x` (Ast) error[E0382]: use of moved value: `x` (Mir) --> $DIR/borrowck-reinit.rs:8:16 | +LL | let mut x = Box::new(0); + | ----- move occurs because `x` has type `std::boxed::Box<i32>`, which does not implement the `Copy` trait +... LL | drop(x); | - value moved here LL | let _ = (1,x); //~ ERROR use of moved value: `x` (Ast) | ^ value used here after move - | - = note: move occurs because `x` has type `std::boxed::Box<i32>`, which does not implement the `Copy` trait error: aborting due to 2 previous errors diff --git a/src/test/ui/borrowck/issue-41962.stderr b/src/test/ui/borrowck/issue-41962.stderr index fd4d318b5dd..3c0071f6b37 100644 --- a/src/test/ui/borrowck/issue-41962.stderr +++ b/src/test/ui/borrowck/issue-41962.stderr @@ -19,10 +19,13 @@ LL | if let Some(thing) = maybe { error[E0382]: use of moved value (Mir) --> $DIR/issue-41962.rs:7:21 | +LL | let maybe = Some(vec![true, true]); + | ---------------- move occurs because value has type `std::vec::Vec<bool>`, which does not implement the `Copy` trait +... LL | if let Some(thing) = maybe { | ^^^^^ value moved here, in previous iteration of loop | - = note: move occurs because value has type `std::vec::Vec<bool>`, which does not implement the `Copy` trait + = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) error: aborting due to 3 previous errors diff --git a/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out-with-mut.nll.stderr b/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out-with-mut.nll.stderr index 7861087ad02..42aa0381702 100644 --- a/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out-with-mut.nll.stderr +++ b/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out-with-mut.nll.stderr @@ -1,32 +1,32 @@ error[E0382]: assign to part of moved value: `t` --> $DIR/issue-54499-field-mutation-of-moved-out-with-mut.rs:23:9 | +LL | let mut t: Tuple = (S(0), 0); + | ----- move occurs because `t` has type `(S, i32)`, which does not implement the `Copy` trait LL | drop(t); | - value moved here LL | t.0 = S(1); | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `t` has type `(S, i32)`, which does not implement the `Copy` trait error[E0382]: assign to part of moved value: `u` --> $DIR/issue-54499-field-mutation-of-moved-out-with-mut.rs:34:9 | +LL | let mut u: Tpair = Tpair(S(0), 0); + | ----- move occurs because `u` has type `Tpair`, which does not implement the `Copy` trait LL | drop(u); | - value moved here LL | u.0 = S(1); | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `u` has type `Tpair`, which does not implement the `Copy` trait error[E0382]: assign to part of moved value: `v` --> $DIR/issue-54499-field-mutation-of-moved-out-with-mut.rs:45:9 | +LL | let mut v: Spair = Spair { x: S(0), y: 0 }; + | ----- move occurs because `v` has type `Spair`, which does not implement the `Copy` trait LL | drop(v); | - value moved here LL | v.x = S(1); | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `v` has type `Spair`, which does not implement the `Copy` trait error: aborting due to 3 previous errors diff --git a/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out.nll.stderr b/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out.nll.stderr index d35d0058027..1184907f307 100644 --- a/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out.nll.stderr +++ b/src/test/ui/borrowck/issue-54499-field-mutation-of-moved-out.nll.stderr @@ -10,12 +10,12 @@ LL | t.0 = S(1); error[E0382]: assign to part of moved value: `t` --> $DIR/issue-54499-field-mutation-of-moved-out.rs:23:9 | +LL | let t: Tuple = (S(0), 0); + | - move occurs because `t` has type `(S, i32)`, which does not implement the `Copy` trait LL | drop(t); | - value moved here LL | t.0 = S(1); | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `t` has type `(S, i32)`, which does not implement the `Copy` trait error[E0594]: cannot assign to `t.1`, as `t` is not declared as mutable --> $DIR/issue-54499-field-mutation-of-moved-out.rs:27:9 @@ -38,12 +38,12 @@ LL | u.0 = S(1); error[E0382]: assign to part of moved value: `u` --> $DIR/issue-54499-field-mutation-of-moved-out.rs:38:9 | +LL | let u: Tpair = Tpair(S(0), 0); + | - move occurs because `u` has type `Tpair`, which does not implement the `Copy` trait LL | drop(u); | - value moved here LL | u.0 = S(1); | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `u` has type `Tpair`, which does not implement the `Copy` trait error[E0594]: cannot assign to `u.1`, as `u` is not declared as mutable --> $DIR/issue-54499-field-mutation-of-moved-out.rs:42:9 @@ -66,12 +66,12 @@ LL | v.x = S(1); error[E0382]: assign to part of moved value: `v` --> $DIR/issue-54499-field-mutation-of-moved-out.rs:53:9 | +LL | let v: Spair = Spair { x: S(0), y: 0 }; + | - move occurs because `v` has type `Spair`, which does not implement the `Copy` trait LL | drop(v); | - value moved here LL | v.x = S(1); | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `v` has type `Spair`, which does not implement the `Copy` trait error[E0594]: cannot assign to `v.y`, as `v` is not declared as mutable --> $DIR/issue-54499-field-mutation-of-moved-out.rs:57:9 diff --git a/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr b/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr index 8ea2bdb693d..6993419326c 100644 --- a/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr +++ b/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr @@ -1,6 +1,9 @@ error[E0382]: use of moved value: `b` --> $DIR/issue-27282-move-match-input-into-guard.rs:18:14 | +LL | let b = &mut true; + | - move occurs because `b` has type `&mut bool`, which does not implement the `Copy` trait +... LL | _ if { (|| { let bar = b; *bar = false; })(); | -- - variable moved due to use in closure | | @@ -8,8 +11,6 @@ LL | _ if { (|| { let bar = b; *bar = false; })(); LL | false } => { }, LL | &mut true => { println!("You might think we should get here"); }, | ^^^^ value used here after move - | - = note: move occurs because `b` has type `&mut bool`, which does not implement the `Copy` trait error: aborting due to previous error diff --git a/src/test/ui/issues/issue-29723.stderr b/src/test/ui/issues/issue-29723.stderr index de858aec881..7928af5d5a5 100644 --- a/src/test/ui/issues/issue-29723.stderr +++ b/src/test/ui/issues/issue-29723.stderr @@ -1,13 +1,14 @@ error[E0382]: use of moved value: `s` --> $DIR/issue-29723.rs:12:13 | +LL | let s = String::new(); + | - move occurs because `s` has type `std::string::String`, which does not implement the `Copy` trait +LL | let _s = match 0 { LL | 0 if { drop(s); false } => String::from("oops"), | - value moved here ... LL | s | ^ value used here after move - | - = note: move occurs because `s` has type `std::string::String`, which does not implement the `Copy` trait error: aborting due to previous error diff --git a/src/test/ui/moves/moves-based-on-type-tuple.stderr b/src/test/ui/moves/moves-based-on-type-tuple.stderr index 2d2c0a15a00..c49dbdab402 100644 --- a/src/test/ui/moves/moves-based-on-type-tuple.stderr +++ b/src/test/ui/moves/moves-based-on-type-tuple.stderr @@ -11,12 +11,12 @@ LL | box (x, x) error[E0382]: use of moved value: `x` (Mir) --> $DIR/moves-based-on-type-tuple.rs:6:13 | +LL | fn dup(x: Box<isize>) -> Box<(Box<isize>,Box<isize>)> { + | - move occurs because `x` has type `std::boxed::Box<isize>`, which does not implement the `Copy` trait LL | box (x, x) | - ^ value used here after move | | | value moved here - | - = note: move occurs because `x` has type `std::boxed::Box<isize>`, which does not implement the `Copy` trait error: aborting due to 2 previous errors diff --git a/src/test/ui/nll/closure-access-spans.stderr b/src/test/ui/nll/closure-access-spans.stderr index efe4c15240d..3ca0aefb592 100644 --- a/src/test/ui/nll/closure-access-spans.stderr +++ b/src/test/ui/nll/closure-access-spans.stderr @@ -59,50 +59,50 @@ LL | r.use_ref(); error[E0382]: borrow of moved value: `x` --> $DIR/closure-access-spans.rs:37:5 | +LL | fn closure_imm_capture_moved(mut x: String) { + | ----- move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait LL | let r = x; | - value moved here LL | || x.len(); //~ ERROR | ^^ - borrow occurs due to use in closure | | | value borrowed here after move - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error[E0382]: borrow of moved value: `x` --> $DIR/closure-access-spans.rs:42:5 | +LL | fn closure_mut_capture_moved(mut x: String) { + | ----- move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait LL | let r = x; | - value moved here LL | || x = String::new(); //~ ERROR | ^^ - borrow occurs due to use in closure | | | value borrowed here after move - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error[E0382]: borrow of moved value: `x` --> $DIR/closure-access-spans.rs:47:5 | +LL | fn closure_unique_capture_moved(x: &mut String) { + | - move occurs because `x` has type `&mut std::string::String`, which does not implement the `Copy` trait LL | let r = x; | - value moved here LL | || *x = String::new(); //~ ERROR | ^^ - borrow occurs due to use in closure | | | value borrowed here after move - | - = note: move occurs because `x` has type `&mut std::string::String`, which does not implement the `Copy` trait error[E0382]: use of moved value: `x` --> $DIR/closure-access-spans.rs:52:5 | +LL | fn closure_move_capture_moved(x: &mut String) { + | - move occurs because `x` has type `&mut std::string::String`, which does not implement the `Copy` trait LL | let r = x; | - value moved here LL | || x; //~ ERROR | ^^ - use occurs due to use in closure | | | value used here after move - | - = note: move occurs because `x` has type `&mut std::string::String`, which does not implement the `Copy` trait error: aborting due to 9 previous errors diff --git a/src/test/ui/nll/closure-move-spans.stderr b/src/test/ui/nll/closure-move-spans.stderr index 3ae1912eb10..6750c404760 100644 --- a/src/test/ui/nll/closure-move-spans.stderr +++ b/src/test/ui/nll/closure-move-spans.stderr @@ -1,38 +1,38 @@ error[E0382]: use of moved value: `x` --> $DIR/closure-move-spans.rs:7:13 | +LL | fn move_after_move(x: String) { + | - move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait LL | || x; | -- - variable moved due to use in closure | | | value moved into closure here LL | let y = x; //~ ERROR | ^ value used here after move - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error[E0382]: borrow of moved value: `x` --> $DIR/closure-move-spans.rs:12:13 | +LL | fn borrow_after_move(x: String) { + | - move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait LL | || x; | -- - variable moved due to use in closure | | | value moved into closure here LL | let y = &x; //~ ERROR | ^^ value borrowed here after move - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error[E0382]: borrow of moved value: `x` --> $DIR/closure-move-spans.rs:17:13 | +LL | fn borrow_mut_after_move(mut x: String) { + | ----- move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait LL | || x; | -- - variable moved due to use in closure | | | value moved into closure here LL | let y = &mut x; //~ ERROR | ^^^^^^ value borrowed here after move - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error: aborting due to 3 previous errors diff --git a/src/test/ui/nll/closures-in-loops.stderr b/src/test/ui/nll/closures-in-loops.stderr index 93e095d663c..6c9e1639f88 100644 --- a/src/test/ui/nll/closures-in-loops.stderr +++ b/src/test/ui/nll/closures-in-loops.stderr @@ -1,12 +1,13 @@ error[E0382]: use of moved value: `x` --> $DIR/closures-in-loops.rs:8:9 | +LL | fn repreated_move(x: String) { + | - move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait +LL | for i in 0..10 { LL | || x; //~ ERROR | ^^ - use occurs due to use in closure | | | value moved into closure here, in previous iteration of loop - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error[E0499]: cannot borrow `x` as mutable more than once at a time --> $DIR/closures-in-loops.rs:15:16 diff --git a/src/test/ui/nll/issue-21232-partial-init-and-erroneous-use.stderr b/src/test/ui/nll/issue-21232-partial-init-and-erroneous-use.stderr index e29c44760a9..54c728e3d27 100644 --- a/src/test/ui/nll/issue-21232-partial-init-and-erroneous-use.stderr +++ b/src/test/ui/nll/issue-21232-partial-init-and-erroneous-use.stderr @@ -13,12 +13,12 @@ LL | d.x = 10; error[E0382]: assign of moved value: `d` --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:43:5 | +LL | let mut d = D { x: 0, s: S{ y: 0, z: 0 } }; + | ----- move occurs because `d` has type `D`, which does not implement the `Copy` trait LL | drop(d); | - value moved here LL | d.x = 10; | ^^^^^^^^ value assigned here after move - | - = note: move occurs because `d` has type `D`, which does not implement the `Copy` trait error[E0381]: assign to part of possibly uninitialized variable: `d` --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:49:5 @@ -35,12 +35,12 @@ LL | d.s.y = 20; error[E0382]: assign to part of moved value: `d` --> $DIR/issue-21232-partial-init-and-erroneous-use.rs:62:5 | +LL | let mut d = D { x: 0, s: S{ y: 0, z: 0} }; + | ----- move occurs because `d` has type `D`, which does not implement the `Copy` trait LL | drop(d); | - value moved here LL | d.s.y = 20; | ^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `d` has type `D`, which does not implement the `Copy` trait error: aborting due to 6 previous errors diff --git a/src/test/ui/nll/issue-21232-partial-init-and-use.stderr b/src/test/ui/nll/issue-21232-partial-init-and-use.stderr index aec7f676fce..23da533252c 100644 --- a/src/test/ui/nll/issue-21232-partial-init-and-use.stderr +++ b/src/test/ui/nll/issue-21232-partial-init-and-use.stderr @@ -14,21 +14,21 @@ error[E0382]: assign to part of moved value: `s` --> $DIR/issue-21232-partial-init-and-use.rs:113:5 | LL | let mut s: S<B> = S::new(); drop(s); - | - value moved here + | ----- - value moved here + | | + | move occurs because `s` has type `S<std::boxed::Box<u32>>`, which does not implement the `Copy` trait LL | s.x = 10; s.y = Box::new(20); | ^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `s` has type `S<std::boxed::Box<u32>>`, which does not implement the `Copy` trait error[E0382]: assign to part of moved value: `t` --> $DIR/issue-21232-partial-init-and-use.rs:120:5 | LL | let mut t: T = (0, Box::new(0)); drop(t); - | - value moved here + | ----- - value moved here + | | + | move occurs because `t` has type `(u32, std::boxed::Box<u32>)`, which does not implement the `Copy` trait LL | t.0 = 10; t.1 = Box::new(20); | ^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `t` has type `(u32, std::boxed::Box<u32>)`, which does not implement the `Copy` trait error[E0381]: assign to part of possibly uninitialized variable: `s` --> $DIR/issue-21232-partial-init-and-use.rs:127:5 @@ -46,21 +46,21 @@ error[E0382]: assign to part of moved value: `s` --> $DIR/issue-21232-partial-init-and-use.rs:141:5 | LL | let mut s: S<B> = S::new(); drop(s); - | - value moved here + | ----- - value moved here + | | + | move occurs because `s` has type `S<std::boxed::Box<u32>>`, which does not implement the `Copy` trait LL | s.x = 10; | ^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `s` has type `S<std::boxed::Box<u32>>`, which does not implement the `Copy` trait error[E0382]: assign to part of moved value: `t` --> $DIR/issue-21232-partial-init-and-use.rs:148:5 | LL | let mut t: T = (0, Box::new(0)); drop(t); - | - value moved here + | ----- - value moved here + | | + | move occurs because `t` has type `(u32, std::boxed::Box<u32>)`, which does not implement the `Copy` trait LL | t.0 = 10; | ^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `t` has type `(u32, std::boxed::Box<u32>)`, which does not implement the `Copy` trait error[E0381]: assign to part of possibly uninitialized variable: `s` --> $DIR/issue-21232-partial-init-and-use.rs:155:5 @@ -153,22 +153,24 @@ LL | q.r.f.0 = 10; error[E0382]: assign to part of moved value: `c` --> $DIR/issue-21232-partial-init-and-use.rs:259:13 | +LL | let mut c = (1, "".to_owned()); + | ----- move occurs because `c` has type `(i32, std::string::String)`, which does not implement the `Copy` trait +LL | match c { LL | c2 => { | -- value moved here LL | c.0 = 2; //~ ERROR assign to part of moved value | ^^^^^^^ value partially assigned here after move - | - = note: move occurs because `c` has type `(i32, std::string::String)`, which does not implement the `Copy` trait error[E0382]: assign to part of moved value: `c` --> $DIR/issue-21232-partial-init-and-use.rs:269:13 | +LL | let mut c = (1, (1, "".to_owned())); + | ----- move occurs because `c` has type `(i32, (i32, std::string::String))`, which does not implement the `Copy` trait +LL | match c { LL | c2 => { | -- value moved here LL | (c.1).0 = 2; //~ ERROR assign to part of moved value | ^^^^^^^^^^^ value partially assigned here after move - | - = note: move occurs because `c` has type `(i32, (i32, std::string::String))`, which does not implement the `Copy` trait error[E0382]: assign to part of moved value: `c.1` --> $DIR/issue-21232-partial-init-and-use.rs:277:13 diff --git a/src/test/ui/nll/issue-51512.stderr b/src/test/ui/nll/issue-51512.stderr index 4717935e4b9..a84a236ca77 100644 --- a/src/test/ui/nll/issue-51512.stderr +++ b/src/test/ui/nll/issue-51512.stderr @@ -1,12 +1,12 @@ error[E0382]: use of moved value: `range` --> $DIR/issue-51512.rs:7:13 | +LL | let range = 0..1; + | ----- move occurs because `range` has type `std::ops::Range<i32>`, which does not implement the `Copy` trait LL | let r = range; | ----- value moved here LL | let x = range.start; | ^^^^^^^^^^^ value used here after move - | - = note: move occurs because `range` has type `std::ops::Range<i32>`, which does not implement the `Copy` trait error: aborting due to previous error diff --git a/src/test/ui/nll/issue-52669.stderr b/src/test/ui/nll/issue-52669.stderr index e1fb76c6bc2..f51768c3859 100644 --- a/src/test/ui/nll/issue-52669.stderr +++ b/src/test/ui/nll/issue-52669.stderr @@ -1,12 +1,13 @@ error[E0382]: borrow of moved value: `a.b` --> $DIR/issue-52669.rs:15:5 | +LL | fn bar(mut a: A) -> B { + | ----- move occurs because `a` has type `A`, which does not implement the `Copy` trait +LL | a.b = B; LL | foo(a); | - value moved here LL | a.b.clone() | ^^^ value borrowed here after move - | - = note: move occurs because `a` has type `A`, which does not implement the `Copy` trait error: aborting due to previous error diff --git a/src/test/ui/try-block/try-block-bad-lifetime.stderr b/src/test/ui/try-block/try-block-bad-lifetime.stderr index 5bb0b099b97..b1b925d694f 100644 --- a/src/test/ui/try-block/try-block-bad-lifetime.stderr +++ b/src/test/ui/try-block/try-block-bad-lifetime.stderr @@ -25,13 +25,14 @@ LL | ::std::mem::drop(k); //~ ERROR use of moved value: `k` error[E0382]: use of moved value: `k` --> $DIR/try-block-bad-lifetime.rs:31:26 | +LL | let k = &mut i; + | - move occurs because `k` has type `&mut i32`, which does not implement the `Copy` trait +LL | let mut j: Result<(), &mut i32> = try { LL | Err(k) ?; | - value moved here ... LL | ::std::mem::drop(k); //~ ERROR use of moved value: `k` | ^ value used here after move - | - = note: move occurs because `k` has type `&mut i32`, which does not implement the `Copy` trait error[E0506]: cannot assign to `i` because it is borrowed --> $DIR/try-block-bad-lifetime.rs:32:9 diff --git a/src/test/ui/try-block/try-block-maybe-bad-lifetime.stderr b/src/test/ui/try-block/try-block-maybe-bad-lifetime.stderr index f96c7146d18..dafbde6a515 100644 --- a/src/test/ui/try-block/try-block-maybe-bad-lifetime.stderr +++ b/src/test/ui/try-block/try-block-maybe-bad-lifetime.stderr @@ -13,13 +13,14 @@ LL | do_something_with(x); error[E0382]: borrow of moved value: `x` --> $DIR/try-block-maybe-bad-lifetime.rs:28:24 | +LL | let x = String::new(); + | - move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait +... LL | ::std::mem::drop(x); | - value moved here LL | }; LL | println!("{}", x); //~ ERROR borrow of moved value: `x` | ^ value borrowed here after move - | - = note: move occurs because `x` has type `std::string::String`, which does not implement the `Copy` trait error[E0506]: cannot assign to `i` because it is borrowed --> $DIR/try-block-maybe-bad-lifetime.rs:40:9 |
