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error: `--x` could be misinterpreted as pre-decrement by C programmers, is usually a no-op
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--> $DIR/double_neg.rs:9:5
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9 | --x;
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| ^^^
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note: lint level defined here
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--> $DIR/double_neg.rs:4:8
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4 | #[deny(double_neg)]
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| ^^^^^^^^^^
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error: aborting due to previous error
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