rust/tests/ui/issues/issue-17959.rs

extern crate core;

use core::ops::Drop;

trait Bar {}

struct G<T: ?Sized> {
    _ptr: *const T
}

impl<T> Drop for G<T> {
//~^ ERROR `Drop` impl requires `T: Sized`
    fn drop(&mut self) {
        if !self._ptr.is_null() {
        }
    }
}

fn main() {
    let x:G<dyn Bar>;
}
Add regression test for #17959 Closes #17959. 2015-05-02 05:34:19 -05:00			`extern crate core;`

			`use core::ops::Drop;`

			`trait Bar {}`

			`struct G<T: ?Sized> {`
			`_ptr: *const T`
			`}`

			`impl<T> Drop for G<T> {`
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 `Drop` impl requires `T: Sized`
Add regression test for #17959 Closes #17959. 2015-05-02 05:34:19 -05:00			`fn drop(&mut self) {`
			`if !self._ptr.is_null() {`
			`}`
			`}`
			`}`

			`fn main() {`
Update ui test suite to use dyn 2019-05-28 13:46:13 -05:00			`let x:G<dyn Bar>;`
Add regression test for #17959 Closes #17959. 2015-05-02 05:34:19 -05:00			`}`