1 files changed, 25 insertions, 0 deletions
diff --git a/tests/codegen-llvm/slice-position-bounds-check.rs b/tests/codegen-llvm/slice-position-bounds-check.rs
new file mode 100644
index 00000000000..0d1d1d869ae
--- /dev/null
+++ b/tests/codegen-llvm/slice-position-bounds-check.rs
@@ -0,0 +1,25 @@
+//@ compile-flags: -Copt-level=3 -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]
+}