From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/codegen/enum-bounds-check-issue-82871.rs | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 tests/codegen/enum-bounds-check-issue-82871.rs (limited to 'tests/codegen/enum-bounds-check-issue-82871.rs') 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] +} -- cgit v1.2.3