mirror of https://github.com/rust-lang/rust
34 lines
1.1 KiB
Rust
34 lines
1.1 KiB
Rust
// This test checks that it proper item type will be suggested when
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// using the `_` type placeholder.
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fn test1() -> _ { Some(42) }
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
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const TEST2: _ = 42u32;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
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const TEST3: _ = Some(42);
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
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const TEST4: fn() -> _ = 42;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for functions
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//~| ERROR the placeholder `_` is not allowed within types on item signatures for constant items
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trait Test5 {
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const TEST5: _ = 42;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated constants
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}
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struct Test6;
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impl Test6 {
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const TEST6: _ = 13;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated constants
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}
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pub fn main() {
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let _: Option<usize> = test1(); //~ ERROR mismatched types
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let _: f64 = test1(); //~ ERROR mismatched types
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let _: Option<i32> = test1();
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}
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