e16dbb7888
The parser now warns about use of mutbl-ref mode, though it's kind of a lie since this commit doesn't remove support for the mode. Changed move_val_init to have stage0 and stage1/2 versions, the latter of which is demoded. Changed the type that the typechecker expects the move_val_init intrinsic to have. After this is pushed, I can make a new snapshot, which will remove the need for the stage0 versions.
30 lines
694 B
Rust
30 lines
694 B
Rust
// Note: it would be nice to give fewer warnings in these cases.
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fn mutate_by_mut_ref(x: &mut uint) {
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*x = 0;
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}
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fn mutate_by_ref(&&x: uint) {
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//~^ WARNING unused variable: `x`
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x = 0; //~ ERROR assigning to argument
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}
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fn mutate_by_val(++x: uint) {
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//~^ WARNING unused variable: `x`
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x = 0; //~ ERROR assigning to argument
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}
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fn mutate_by_copy(+x: uint) {
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//~^ WARNING unused variable: `x`
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x = 0; //~ ERROR assigning to argument
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//~^ WARNING value assigned to `x` is never read
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}
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fn mutate_by_move(-x: uint) {
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//~^ WARNING unused variable: `x`
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x = 0; //~ ERROR assigning to argument
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//~^ WARNING value assigned to `x` is never read
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}
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fn main() {
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}
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