tests/codegen/integer-overflow.rs

   1 // no-system-llvm
   2 // compile-flags: -O -C overflow-checks=on
   3
   4 #![crate_type = "lib"]
   5
   6
   7 pub struct S1<'a> {
   8     data: &'a [u8],
   9     position: usize,
  10 }
  11
  12 // CHECK-LABEL: @slice_no_index_order
  13 #[no_mangle]
  14 pub fn slice_no_index_order<'a>(s: &'a mut S1, n: usize) -> &'a [u8] {
  15     // CHECK-NOT: slice_index_order_fail
  16     let d = &s.data[s.position..s.position+n];
  17     s.position += n;
  18     return d;
  19 }
  20
  21 // CHECK-LABEL: @test_check
  22 #[no_mangle]
  23 pub fn test_check<'a>(s: &'a mut S1, x: usize, y: usize) -> &'a [u8] {
  24     // CHECK: slice_index_order_fail
  25     &s.data[x..y]
  26 }