From 51852020730bc7b072034f974f436db707ed8dcc Mon Sep 17 00:00:00 2001
From: Chris Kennelly CA <ckennelly@google.com>
Date: Fri, 18 Sep 2026 20:12:31 -0700
Subject: [PATCH] Use sized deallocation for MockSpan in linked_list_benchmark.

Replace unsized delete on MockSpan with sized deallocation via MockSpan::Delete
(::operator delete(s, sizeof(MockSpan))) to eliminate unsized deallocation profiling
overhead and include <new> for sized deallocation operator completeness.

PiperOrigin-RevId: 984209422
---
 tcmalloc/internal/linked_list_benchmark.cc | 2 +-
 tcmalloc/internal/mock_span.h              | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/tcmalloc/internal/linked_list_benchmark.cc b/tcmalloc/internal/linked_list_benchmark.cc
index 2db3a7bcf..4ae0e6e81 100644
--- a/tcmalloc/internal/linked_list_benchmark.cc
+++ b/tcmalloc/internal/linked_list_benchmark.cc
@@ -133,7 +133,7 @@ static void BM_AppendRemove(benchmark::State& state) {
   }
 
   for (MockSpan* s : vappend) {
-    delete s;
+    MockSpan::Delete(s);
   }
 }
 
diff --git a/tcmalloc/internal/mock_span.h b/tcmalloc/internal/mock_span.h
index 0002831a6..07a5af615 100644
--- a/tcmalloc/internal/mock_span.h
+++ b/tcmalloc/internal/mock_span.h
@@ -15,6 +15,8 @@
 #ifndef TCMALLOC_INTERNAL_MOCK_SPAN_H_
 #define TCMALLOC_INTERNAL_MOCK_SPAN_H_
 
+#include <new>
+
 #include "tcmalloc/internal/linked_list.h"
 
 namespace tcmalloc {
@@ -33,6 +35,8 @@ class MockSpan : public MockSpanList::Elem {
     return ret;
   }
 
+  static void Delete(MockSpan* s) { ::operator delete(s, sizeof(MockSpan)); }
+
   int index_;
 };