Rollup merge of #94043 - DrMeepster:box_alloc_ice, r=oli-obk

Fix ICE when using Box<T, A> with pointer sized A

Fixes #78459

Note that using `Box<T, A>` with a more than pointer sized `A` or using a pointer sized `A` with a Box of a DST will produce a different ICE (#92054) which is not fixed by this PR.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/test/ui/box/issue-78459-ice.rs b/src/test/ui/box/issue-78459-ice.rs
new file mode 100644
index 00000000000..89f75fea15b
--- /dev/null
+++ b/src/test/ui/box/issue-78459-ice.rs
@@ -0,0 +1,6 @@
+// check-pass
+#![feature(allocator_api)]
+
+fn main() {
+    Box::new_in((), &std::alloc::Global);
+}