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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// 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]
}
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