From e3ef4fdac9bc83ebc30d421d9629c9df990d04c2 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Thu, 14 Jul 2022 11:40:47 -0400
Subject: [PATCH] rename MPlaceTy::dangling to fake_alloc_zst

---
 compiler/rustc_const_eval/src/interpret/place.rs      | 4 +++-
 compiler/rustc_const_eval/src/interpret/terminator.rs | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_const_eval/src/interpret/place.rs b/compiler/rustc_const_eval/src/interpret/place.rs
index 84ecfbabad369..f4b11ea196757 100644
--- a/compiler/rustc_const_eval/src/interpret/place.rs
+++ b/compiler/rustc_const_eval/src/interpret/place.rs
@@ -188,8 +188,10 @@ impl<Tag: Provenance> Place<Tag> {
 
 impl<'tcx, Tag: Provenance> MPlaceTy<'tcx, Tag> {
     /// Produces a MemPlace that works for ZST but nothing else.
+    /// Conceptually this is a new allocation, but it doesn't actually create an allocation so you
+    /// don't need to worry about memory leaks.
     #[inline]
-    pub fn dangling(layout: TyAndLayout<'tcx>) -> Self {
+    pub fn fake_alloc_zst(layout: TyAndLayout<'tcx>) -> Self {
         assert!(layout.is_zst());
         let align = layout.align.abi;
         let ptr = Pointer::from_addr(align.bytes()); // no provenance, absolute address
diff --git a/compiler/rustc_const_eval/src/interpret/terminator.rs b/compiler/rustc_const_eval/src/interpret/terminator.rs
index 9ff405b993944..20122f8131c33 100644
--- a/compiler/rustc_const_eval/src/interpret/terminator.rs
+++ b/compiler/rustc_const_eval/src/interpret/terminator.rs
@@ -617,7 +617,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
             place.to_ref(self),
             self.layout_of(self.tcx.mk_mut_ptr(place.layout.ty))?,
         );
-        let ret = MPlaceTy::dangling(self.layout_of(self.tcx.types.unit)?);
+        let ret = MPlaceTy::fake_alloc_zst(self.layout_of(self.tcx.types.unit)?);
 
         self.eval_fn_call(
             FnVal::Instance(instance),