44 lines
1.4 KiB
Rust
44 lines
1.4 KiB
Rust
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#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(drop_ref)]
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#![allow(toplevel_ref_arg)]
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use std::mem::drop;
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struct DroppableStruct;
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impl Drop for DroppableStruct { fn drop(&mut self) {} }
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fn main() {
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drop(&DroppableStruct); //~ERROR call to `std::mem::drop` with a reference argument
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let mut owned = DroppableStruct;
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drop(&owned); //~ERROR call to `std::mem::drop` with a reference argument
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drop(&&owned); //~ERROR call to `std::mem::drop` with a reference argument
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drop(&mut owned); //~ERROR call to `std::mem::drop` with a reference argument
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drop(owned); //OK
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let reference1 = &DroppableStruct;
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drop(reference1); //~ERROR call to `std::mem::drop` with a reference argument
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drop(&*reference1); //~ERROR call to `std::mem::drop` with a reference argument
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let reference2 = &mut DroppableStruct;
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drop(reference2); //~ERROR call to `std::mem::drop` with a reference argument
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let ref reference3 = DroppableStruct;
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drop(reference3); //~ERROR call to `std::mem::drop` with a reference argument
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}
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#[allow(dead_code)]
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fn test_generic_fn<T>(val: T) {
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drop(&val); //~ERROR call to `std::mem::drop` with a reference argument
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drop(val); //OK
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}
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#[allow(dead_code)]
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fn test_similarly_named_function() {
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fn drop<T>(_val: T) {}
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drop(&DroppableStruct); //OK; call to unrelated function which happens to have the same name
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std::mem::drop(&DroppableStruct); //~ERROR call to `std::mem::drop` with a reference argument
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}
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