abfde39b0e
- Repurposes `MoveData.assignee_ids` to mean only `=` but not `+=`, so that borrowck effectively classifies all expressions into assignees, uses or both. - Removes two `span_err` in liveness analysis, which are now borrowck's responsibilities. Closes #12527.
45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Tests that the use of uninitialized variable in assignment operator
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// expression is detected.
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pub fn main() {
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let x: int;
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x += 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x -= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x *= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x /= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x %= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x ^= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x &= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x |= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x <<= 1; //~ ERROR use of possibly uninitialized variable: `x`
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let x: int;
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x >>= 1; //~ ERROR use of possibly uninitialized variable: `x`
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}
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