1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
// no-system-llvm
// compile-flags: -O -C panic=abort
#![crate_type = "lib"]
fn search<T: Ord + Eq>(arr: &mut [T], a: &T) -> Result<usize, ()> {
match arr.iter().position(|x| x == a) {
Some(p) => {
Ok(p)
},
None => Err(()),
}
}
// CHECK-LABEL: @position_no_bounds_check
#[no_mangle]
pub fn position_no_bounds_check(y: &mut [u32], x: &u32, z: &u32) -> bool {
// This contains "call assume" so we cannot just rule out all calls
// CHECK-NOT: panic_bounds_check
if let Ok(p) = search(y, x) {
y[p] == *z
} else {
false
}
}
// just to make sure that panicking really emits "panic_bounds_check" somewhere in the IR
// CHECK-LABEL: @test_check
#[no_mangle]
pub fn test_check(y: &[i32]) -> i32 {
// CHECK: panic_bounds_check
y[12]
}
|
