rust/tests/ui/issues/issue-17441.rs

fn main() {
    let _foo = &[1_usize, 2] as [usize];
    //~^ ERROR cast to unsized type: `&[usize; 2]` as `[usize]`

    let _bar = Box::new(1_usize) as dyn std::fmt::Debug;
    //~^ ERROR cast to unsized type: `Box<usize>` as `dyn Debug`

    let _baz = 1_usize as dyn std::fmt::Debug;
    //~^ ERROR cast to unsized type: `usize` as `dyn Debug`

    let _quux = [1_usize, 2] as [usize];
    //~^ ERROR cast to unsized type: `[usize; 2]` as `[usize]`
}
Add regression test for issue #17441 2014-09-27 19:22:32 +00:00			`fn main() {`
Update suffixes en masse in tests using `perl -p -i -e` 2015-02-18 10:42:01 +00:00			`let _foo = &[1_usize, 2] as [usize];`
test fallout from isize/usize 2014-12-06 02:12:25 +00:00			//~^ ERROR cast to unsized type: `&[usize; 2]` as `[usize]`
Switched to Box::new in many places. Many of the modifications putting in `Box::new` calls also include a pointer to Issue 22405, which tracks going back to `box <expr>` if possible in the future. (Still tried to use `Box<_>` where it sufficed; thus some tests still have `box_syntax` enabled, as they use a mix of `box` and `Box::new`.) Precursor for overloaded-`box` and placement-`in`; see Issue 22181. 2015-02-15 08:52:21 +00:00
Update ui test suite to use dyn 2019-05-28 18:46:13 +00:00			`let _bar = Box::new(1_usize) as dyn std::fmt::Debug;`
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 07:40:56 +00:00			//~^ ERROR cast to unsized type: `Box<usize>` as `dyn Debug`
Switched to Box::new in many places. Many of the modifications putting in `Box::new` calls also include a pointer to Issue 22405, which tracks going back to `box <expr>` if possible in the future. (Still tried to use `Box<_>` where it sufficed; thus some tests still have `box_syntax` enabled, as they use a mix of `box` and `Box::new`.) Precursor for overloaded-`box` and placement-`in`; see Issue 22181. 2015-02-15 08:52:21 +00:00
Update ui test suite to use dyn 2019-05-28 18:46:13 +00:00			`let _baz = 1_usize as dyn std::fmt::Debug;`
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 07:40:56 +00:00			//~^ ERROR cast to unsized type: `usize` as `dyn Debug`
Switched to Box::new in many places. Many of the modifications putting in `Box::new` calls also include a pointer to Issue 22405, which tracks going back to `box <expr>` if possible in the future. (Still tried to use `Box<_>` where it sufficed; thus some tests still have `box_syntax` enabled, as they use a mix of `box` and `Box::new`.) Precursor for overloaded-`box` and placement-`in`; see Issue 22181. 2015-02-15 08:52:21 +00:00
Update suffixes en masse in tests using `perl -p -i -e` 2015-02-18 10:42:01 +00:00			`let _quux = [1_usize, 2] as [usize];`
test fallout from isize/usize 2014-12-06 02:12:25 +00:00			//~^ ERROR cast to unsized type: `[usize; 2]` as `[usize]`
Add regression test for issue #17441 2014-09-27 19:22:32 +00:00			`}`