1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/codegen/issue-56927.rs b/src/test/codegen/issue-56927.rs
new file mode 100644
index 000000000..044d72181
--- /dev/null
+++ b/src/test/codegen/issue-56927.rs
@@ -0,0 +1,43 @@
+// compile-flags: -C no-prepopulate-passes
+
+#![crate_type="rlib"]
+
+#[repr(align(16))]
+pub struct S {
+    arr: [u32; 4],
+}
+
+// CHECK-LABEL: @test1
+// CHECK: store i32 0, {{i32\*|ptr}} %{{.+}}, align 16
+// CHECK: store i32 1, {{i32\*|ptr}} %{{.+}}, align 4
+// CHECK: store i32 2, {{i32\*|ptr}} %{{.+}}, align 8
+// CHECK: store i32 3, {{i32\*|ptr}} %{{.+}}, align 4
+#[no_mangle]
+pub fn test1(s: &mut S) {
+    s.arr[0] = 0;
+    s.arr[1] = 1;
+    s.arr[2] = 2;
+    s.arr[3] = 3;
+}
+
+// CHECK-LABEL: @test2
+// CHECK: store i32 4, {{i32\*|ptr}} %{{.+}}, align 4
+#[allow(unconditional_panic)]
+#[no_mangle]
+pub fn test2(s: &mut S) {
+    s.arr[usize::MAX / 4 + 1] = 4;
+}
+
+// CHECK-LABEL: @test3
+// CHECK: store i32 5, {{i32\*|ptr}} %{{.+}}, align 4
+#[no_mangle]
+pub fn test3(s: &mut S, i: usize) {
+    s.arr[i] = 5;
+}
+
+// CHECK-LABEL: @test4
+// CHECK: store i32 6, {{i32\*|ptr}} %{{.+}}, align 4
+#[no_mangle]
+pub fn test4(s: &mut S) {
+    s.arr = [6; 4];
+}