Add two ICEs for #92054

rust-lang/rust#92054

Kudos to @mwerschy for reducing.

ices/92054-1.rs

@@ -0,0 +1,9 @@
+#![feature(allocator_api)]
+
+use std::alloc::{Allocator, Global, Layout};
+
+fn main() {
+    let layout: Layout = None.unwrap();
+    let ptr: *mut u8 = Global.allocate(layout).unwrap().as_ptr() as _;
+    let box_ = unsafe { Box::from_raw_in(ptr, &Global) };
+}

ices/92054-2.rs

@@ -0,0 +1,11 @@
+#![feature(allocator_api)]
+
+use std::alloc::{Allocator, Global, Layout};
+
+fn main() {
+    let layout: Layout = None.unwrap();
+    let ptr: *mut u8 = Global.allocate(layout).unwrap().as_ptr() as _;
+    let slice: &mut [u8] = unsafe { std::slice::from_raw_parts_mut(ptr, 0) };
+    let box_ = unsafe { Box::from_raw_in(slice, &Global) };
+    box_.len();
+}