rust/tests/ui/sync/mutexguard-sync.stderr

error[E0277]: `Cell<i32>` cannot be shared between threads safely
  --> $DIR/mutexguard-sync.rs:11:15
   |
LL |     test_sync(guard);
   |     --------- ^^^^^ `Cell<i32>` cannot be shared between threads safely
   |     |
   |     required by a bound introduced by this call
   |
   = help: the trait `Sync` is not implemented for `Cell<i32>`
   = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
   = note: required for `MutexGuard<'_, Cell<i32>>` to implement `Sync`
note: required by a bound in `test_sync`
  --> $DIR/mutexguard-sync.rs:5:17
   |
LL | fn test_sync<T: Sync>(_t: T) {}
   |                 ^^^^ required by this bound in `test_sync`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
pretty: trim paths of unique symbols If a symbol name can only be imported from one place for a type, and as long as it was not glob-imported anywhere in the current crate, we can trim its printed path and print only the name. This has wide implications on error messages with types, for example, shortening `std::vec::Vec` to just `Vec`, as long as there is no other `Vec` importable anywhere. This adds a new '-Z trim-diagnostic-paths=false' option to control this feature. On the good path, with no diagnosis printed, we should try to avoid issuing this query, so we need to prevent trimmed_def_paths query on several cases. This change also relies on a previous commit that differentiates between `Debug` and `Display` on various rustc types, where the latter is trimmed and presented to the user and the former is not. 2020-09-02 02:40:56 -05:00			error[E0277]: `Cell<i32>` cannot be shared between threads safely
When possible point at argument causing item obligation failure 2019-09-15 23:58:20 -05:00			`--> $DIR/mutexguard-sync.rs:11:15`
Moved compile-fail tests to ui tests. 2018-08-08 07:28:26 -05:00			`\|`
			`LL \| test_sync(guard);`
Point at call span that introduced obligation for the arg 2021-09-07 06:30:53 -05:00			\| --------- ^^^^^ `Cell<i32>` cannot be shared between threads safely
			`\| \|`
			`\| required by a bound introduced by this call`
Moved compile-fail tests to ui tests. 2018-08-08 07:28:26 -05:00			`\|`
pretty: trim paths of unique symbols If a symbol name can only be imported from one place for a type, and as long as it was not glob-imported anywhere in the current crate, we can trim its printed path and print only the name. This has wide implications on error messages with types, for example, shortening `std::vec::Vec` to just `Vec`, as long as there is no other `Vec` importable anywhere. This adds a new '-Z trim-diagnostic-paths=false' option to control this feature. On the good path, with no diagnosis printed, we should try to avoid issuing this query, so we need to prevent trimmed_def_paths query on several cases. This change also relies on a previous commit that differentiates between `Debug` and `Display` on various rustc types, where the latter is trimmed and presented to the user and the former is not. 2020-09-02 02:40:56 -05:00			= help: the trait `Sync` is not implemented for `Cell<i32>`
Add `rustc_on_unimplemented` on `Sync` for cell types Suggest using a lock instead. 2023-01-16 11:51:31 -06:00			= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
Reword "Required because of the requirements on the impl of ..." 2022-08-15 15:31:37 -05:00			= note: required for `MutexGuard<'_, Cell<i32>>` to implement `Sync`
Use note to point at bound introducing requirement 2021-07-31 11:26:55 -05:00			note: required by a bound in `test_sync`
			`--> $DIR/mutexguard-sync.rs:5:17`
			`\|`
			`LL \| fn test_sync<T: Sync>(_t: T) {}`
			\| ^^^^ required by this bound in `test_sync`
Moved compile-fail tests to ui tests. 2018-08-08 07:28:26 -05:00
			`error: aborting due to previous error`

			For more information about this error, try `rustc --explain E0277`.