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35 lines
1.2 KiB
Rust
35 lines
1.2 KiB
Rust
// Issue #14893. Tests that casts from vectors don't behave strangely in the
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// presence of the `_` type shorthand notation.
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//
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// Update: after a change to the way casts are done, we have more type information
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// around and so the errors here are no longer exactly the same.
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//
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// Update: With PR #81479 some of the previously rejected cases are now allowed.
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// New test cases added.
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struct X {
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y: [u8; 2],
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}
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fn main() {
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let x1 = X { y: [0, 0] };
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// No longer a type mismatch - the `_` can be fully resolved by type inference.
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let p1: *const u8 = &x1.y as *const _;
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let p1: *mut u8 = &x1.y as *mut _;
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//~^ ERROR: casting `&[u8; 2]` as `*mut u8` is invalid
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let t1: *const [u8; 2] = &x1.y as *const _;
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let t1: *mut [u8; 2] = &x1.y as *mut _;
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//~^ ERROR: casting `&[u8; 2]` as `*mut [u8; 2]` is invalid
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let h1: *const [u8; 2] = &x1.y as *const [u8; 2];
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let t1: *mut [u8; 2] = &x1.y as *mut [u8; 2];
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//~^ ERROR: casting `&[u8; 2]` as `*mut [u8; 2]` is invalid
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let mut x1 = X { y: [0, 0] };
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let p1: *mut u8 = &mut x1.y as *mut _;
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let p2: *const u8 = &mut x1.y as *const _;
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let t1: *mut [u8; 2] = &mut x1.y as *mut _;
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let h1: *mut [u8; 2] = &mut x1.y as *mut [u8; 2];
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}
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