07e7823c01
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.
35 lines
989 B
Rust
35 lines
989 B
Rust
// Regression test for issue #3645
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fn main() {
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let n = 1;
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let a = [0; n];
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//~^ ERROR attempt to use a non-constant value in a constant [E0435]
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let b = [0; ()];
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//~^ ERROR mismatched types
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//~| expected `usize`, found `()`
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let c = [0; true];
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//~^ ERROR mismatched types
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//~| expected `usize`, found `bool`
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let d = [0; 0.5];
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//~^ ERROR mismatched types
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//~| expected `usize`, found floating-point number
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let e = [0; "foo"];
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//~^ ERROR mismatched types
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//~| expected `usize`, found `&str`
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let f = [0; -4_isize];
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//~^ ERROR mismatched types
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//~| expected `usize`, found `isize`
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let f = [0_usize; -1_isize];
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//~^ ERROR mismatched types
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//~| expected `usize`, found `isize`
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let f = [0; 4u8];
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//~^ ERROR mismatched types
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//~| expected `usize`, found `u8`
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struct G {
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g: (),
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}
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let g = [0; G { g: () }];
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//~^ ERROR mismatched types
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//~| expected `usize`, found struct `G`
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}
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