Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/codegen/enum-bounds-check-issue-82871.rs b/tests/codegen/enum-bounds-check-issue-82871.rs
new file mode 100644
index 000000000..32fdc4a5f
--- /dev/null
+++ b/tests/codegen/enum-bounds-check-issue-82871.rs
@@ -0,0 +1,18 @@
+// compile-flags: -C opt-level=0
+
+#![crate_type = "lib"]
+
+#[repr(C)]
+pub enum E {
+    A,
+}
+
+// CHECK-LABEL: @index
+#[no_mangle]
+pub fn index(x: &[u32; 3], ind: E) -> u32 {
+    // Canary: we should be able to optimize out the bounds check, but we need
+    // to track the range of the discriminant result in order to be able to do that.
+    // oli-obk tried to add that, but that caused miscompilations all over the place.
+    // CHECK: panic_bounds_check
+    x[ind as usize]
+}