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-rw-r--r--tests/codegen/integer-overflow.rs26
1 files changed, 26 insertions, 0 deletions
diff --git a/tests/codegen/integer-overflow.rs b/tests/codegen/integer-overflow.rs
new file mode 100644
index 000000000..183de56db
--- /dev/null
+++ b/tests/codegen/integer-overflow.rs
@@ -0,0 +1,26 @@
+// no-system-llvm
+// 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]
+}