Only emit alignment checks if we have a panic_impl

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/ui/mir/checks_without_panic_impl.rs b/tests/ui/mir/checks_without_panic_impl.rs
new file mode 100644
index 00000000000..04f410b77a3
--- /dev/null
+++ b/tests/ui/mir/checks_without_panic_impl.rs
@@ -0,0 +1,17 @@
+// Ensures that the alignment check we insert for raw pointer dereferences
+// does not prevent crates without a panic_impl from compiling.
+// See rust-lang/rust#109996
+
+// build-pass
+// compile-flags: -Cdebug-assertions=yes
+
+#![crate_type = "lib"]
+
+#![feature(lang_items)]
+#![feature(no_core)]
+#![no_core]
+
+#[lang = "sized"]
+trait Foo {}
+
+pub unsafe fn foo(x: *const i32) -> &'static i32 { unsafe { &*x } }