43 lines
2.3 KiB
Rust
43 lines
2.3 KiB
Rust
fn with<T>(t: T, f: fn(T)) { f(t) }
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fn nested(x: &x.int) { // (1)
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do with(
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fn&(x: &x.int, // Refers to the region `x` at (1)
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y: &y.int, // A fresh region `y` (2)
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z: fn(x: &x.int, // Refers to `x` at (1)
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y: &y.int, // Refers to `y` at (2)
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z: &z.int) -> &z.int) // A fresh region `z` (3)
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-> &x.int {
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if false { ret z(x, x, x); } //! ERROR mismatched types: expected `&y.int` but found `&x.int`
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if false { ret z(x, x, y); } //! ERROR mismatched types: expected `&y.int` but found `&x.int`
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//!^ ERROR mismatched types: expected `&x.int` but found `&y.int`
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if false { ret z(x, y, x); }
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if false { ret z(x, y, y); } //! ERROR mismatched types: expected `&x.int` but found `&y.int`
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if false { ret z(y, x, x); } //! ERROR mismatched types: expected `&x.int` but found `&y.int`
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//!^ ERROR mismatched types: expected `&y.int` but found `&x.int`
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if false { ret z(y, x, y); } //! ERROR mismatched types: expected `&x.int` but found `&y.int`
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//!^ ERROR mismatched types: expected `&y.int` but found `&x.int`
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//!^^ ERROR mismatched types: expected `&x.int` but found `&y.int`
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if false { ret z(y, y, x); } //! ERROR mismatched types: expected `&x.int` but found `&y.int`
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if false { ret z(y, y, y); } //! ERROR mismatched types: expected `&x.int` but found `&y.int`
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//!^ ERROR mismatched types: expected `&x.int` but found `&y.int`
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fail;
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}
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) {|foo|
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let a: &x.int = foo(x, x, { |_x, _y, z| z });
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let b: &x.int = foo(x, a, { |_x, _y, z| z });
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let c: &x.int = foo(a, a, { |_x, _y, z| z });
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let z = 3i;
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let d: &x.int = foo(x, x, { |_x, _y, z| z });
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let e: &x.int = foo(x, &z, { |_x, _y, z| z });
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let f: &x.int = foo(&z, &z, { |_x, _y, z| z }); //! ERROR mismatched types: expected `&x.int` but found
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foo(x, &z, { |x, _y, _z| x }); //! ERROR mismatched types: expected `&z.int` but found `&x.int`
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foo(x, &z, { |_x, y, _z| y }); //! ERROR mismatched types: expected `&z.int` but found `&<block at
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}
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}
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fn main() {} |