[rustc.git] / src / tools / clippy / src / docs / fn_address_comparisons.txt

### What it does
Checks for comparisons with an address of a function item.

### Why is this bad?
Function item address is not guaranteed to be unique and could vary
between different code generation units. Furthermore different function items could have
the same address after being merged together.

### Example
```
type F = fn();
fn a() {}
let f: F = a;
if f == a {
    // ...
}
```
Commit	Line	Data
f2b60f7d FG	1	### What it does
	2	Checks for comparisons with an address of a function item.
	3
	4	### Why is this bad?
	5	Function item address is not guaranteed to be unique and could vary
	6	between different code generation units. Furthermore different function items could have
	7	the same address after being merged together.
	8
	9	### Example
	10	```
	11	type F = fn();
	12	fn a() {}
	13	let f: F = a;
	14	if f == a {
	15	// ...
	16	}
	17	```