rust/tests/codegen/integer-overflow.rs

25 lines
552 B
Rust

//@ compile-flags: -O -C overflow-checks=on
#![crate_type = "lib"]
pub struct S1<'a> {
data: &'a [u8],
position: usize,
}
// CHECK-LABEL: @slice_no_index_order
#[no_mangle]
pub fn slice_no_index_order<'a>(s: &'a mut S1, n: usize) -> &'a [u8] {
// CHECK-NOT: slice_index_order_fail
let d = &s.data[s.position..s.position + n];
s.position += n;
return d;
}
// CHECK-LABEL: @test_check
#[no_mangle]
pub fn test_check<'a>(s: &'a mut S1, x: usize, y: usize) -> &'a [u8] {
// CHECK: slice_index_order_fail
&s.data[x..y]
}