89 lines
2.2 KiB
Rust
89 lines
2.2 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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fn get_number() -> usize {
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10
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}
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fn get_reference(n : &usize) -> &usize {
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n
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}
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#[allow(many_single_char_names, double_parens)]
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#[allow(unused_variables)]
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#[deny(deref_addrof)]
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fn main() {
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let a = 10;
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let aref = &a;
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let b = *&a;
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = a;
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let b = *&get_number();
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = get_number();
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let b = *get_reference(&a);
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let bytes : Vec<usize> = vec![1, 2, 3, 4];
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let b = *&bytes[1..2][0];
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = bytes[1..2][0];
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//This produces a suggestion of 'let b = (a);' which
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//will trigger the 'unused_parens' lint
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let b = *&(a);
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = (a)
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let b = *(&a);
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = a;
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let b = *((&a));
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = a
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let b = *&&a;
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = &a;
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let b = **&aref;
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = *aref;
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//This produces a suggestion of 'let b = *&a;' which
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//will trigger the 'deref_addrof' lint again
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let b = **&&a;
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let b = *&a;
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{
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let mut x = 10;
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let y = *&mut x;
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let y = x;
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}
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{
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//This produces a suggestion of 'let y = *&mut x' which
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//will trigger the 'deref_addrof' lint again
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let mut x = 10;
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let y = **&mut &mut x;
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//~^ERROR immediately dereferencing a reference
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//~|HELP try this
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//~|SUGGESTION let y = *&mut x;
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}
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}
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