From f02ed7b565e6d9ba3b7b13abe86ea3a2dec3bf3c Mon Sep 17 00:00:00 2001
From: Spxg <unsafe@outlook.es>
Date: Wed, 7 Jan 2026 17:10:56 +0800
Subject: [PATCH] Fix `alloc_error_handler` signature mismatch

---
 compiler/rustc_codegen_ssa/src/base.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/compiler/rustc_codegen_ssa/src/base.rs b/compiler/rustc_codegen_ssa/src/base.rs
index 8ab0b367f08a..c8aa7c04585c 100644
--- a/compiler/rustc_codegen_ssa/src/base.rs
+++ b/compiler/rustc_codegen_ssa/src/base.rs
@@ -6,7 +6,8 @@ use std::time::{Duration, Instant};
 use itertools::Itertools;
 use rustc_abi::FIRST_VARIANT;
 use rustc_ast::expand::allocator::{
-    ALLOC_ERROR_HANDLER, ALLOCATOR_METHODS, AllocatorKind, AllocatorMethod, AllocatorTy,
+    ALLOC_ERROR_HANDLER, ALLOCATOR_METHODS, AllocatorKind, AllocatorMethod, AllocatorMethodInput,
+    AllocatorTy,
 };
 use rustc_data_structures::fx::{FxHashMap, FxIndexSet};
 use rustc_data_structures::profiling::{get_resident_set_size, print_time_passes_entry};
@@ -671,7 +672,7 @@ pub fn allocator_shim_contents(tcx: TyCtxt<'_>, kind: AllocatorKind) -> Vec<Allo
         methods.push(AllocatorMethod {
             name: ALLOC_ERROR_HANDLER,
             special: None,
-            inputs: &[],
+            inputs: &[AllocatorMethodInput { name: "layout", ty: AllocatorTy::Layout }],
             output: AllocatorTy::Never,
         });
     }