rust/tests/ui/swap-overlapping.rs

45 lines
761 B
Rust

//@ run-pass
#![allow(dead_code)]
// Issue #5041 - avoid overlapping memcpy when src and dest of a swap are the same
//@ pretty-expanded FIXME #23616
use std::ptr;
pub fn main() {
let mut test = TestDescAndFn {
desc: TestDesc {
name: TestName::DynTestName("test".to_string()),
should_fail: false
},
testfn: TestFn::DynTestFn(22),
};
do_swap(&mut test);
}
fn do_swap(test: &mut TestDescAndFn) {
unsafe {
ptr::swap(test, test);
}
}
pub enum TestName {
DynTestName(String)
}
pub enum TestFn {
DynTestFn(isize),
DynBenchFn(isize),
}
pub struct TestDesc {
name: TestName,
should_fail: bool
}
pub struct TestDescAndFn {
desc: TestDesc,
testfn: TestFn,
}