7c263adb2a
This PR adds support for detecting if overflow checks are enabled in similar fashion as debug_assertions are detected.
Possible use-case of this, for example, if we want to use checked integer casts in builds with overflow checks, e.g.
```rust
pub fn cast(val: usize)->u16 {
if cfg!(overflow_checks) {
val.try_into().unwrap()
}
else{
vas as _
}
}
```
Resolves #91130.
Tracking issue: #111466.
|
||
|---|---|---|
| .. | ||
| accepted.rs | ||
| active.rs | ||
| builtin_attrs.rs | ||
| lib.rs | ||
| removed.rs | ||
| tests.rs | ||