rust/src/test/ui/issues/issue-16538.stderr
Dan Aloni 07e7823c01 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 22:26:37 +03:00

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error[E0015]: calls in statics are limited to constant functions, tuple structs and tuple variants
--> $DIR/issue-16538.rs:11:27
|
LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0277]: `*const usize` cannot be shared between threads safely
--> $DIR/issue-16538.rs:11:1
|
LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `*const usize` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `*const usize`
= note: shared static variables must have a type that implements `Sync`
error[E0133]: use of extern static is unsafe and requires unsafe function or block
--> $DIR/issue-16538.rs:11:34
|
LL | static foo: *const Y::X = Y::foo(Y::x as *const Y::X);
| ^^^^ use of extern static
|
= note: extern statics are not controlled by the Rust type system: invalid data, aliasing violations or data races will cause undefined behavior
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0015, E0133, E0277.
For more information about an error, try `rustc --explain E0015`.