From 279b8cd8229a9a0a71d82d403962fa81e52d6a86 Mon Sep 17 00:00:00 2001
From: Makai <m4kai410@gmail.com>
Date: Thu, 19 Feb 2026 02:16:38 +0800
Subject: [PATCH] Skip `Debug` on `use_existential_projection_new_instead`

---
 compiler/rustc_type_ir/src/predicate.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/rustc_type_ir/src/predicate.rs b/compiler/rustc_type_ir/src/predicate.rs
index ab4677fa0a5fb..113192cc02eb8 100644
--- a/compiler/rustc_type_ir/src/predicate.rs
+++ b/compiler/rustc_type_ir/src/predicate.rs
@@ -420,6 +420,7 @@ pub struct ExistentialProjection<I: Interner> {
 
     /// This field exists to prevent the creation of `ExistentialProjection`
     /// without using [`ExistentialProjection::new_from_args`].
+    #[derive_where(skip(Debug))]
     use_existential_projection_new_instead: (),
 }