diff --git a/clang/test/SemaCXX/warn-unsafe-buffer-usage-warning-data-invocation.cpp b/clang/test/SemaCXX/warn-unsafe-buffer-usage-warning-data-invocation.cpp
index 574afcd0eb6dc..5c9df12513e52 100644
--- a/clang/test/SemaCXX/warn-unsafe-buffer-usage-warning-data-invocation.cpp
+++ b/clang/test/SemaCXX/warn-unsafe-buffer-usage-warning-data-invocation.cpp
@@ -7,7 +7,6 @@
 // RUN: %clang_cc1 -std=c++20 -fblocks -include %s %s 2>&1 | FileCheck --allow-empty %s
 // CHECK-NOT: [-Wunsafe-buffer-usage]
 
-#include <stdint.h>
 #ifndef INCLUDED
 #define INCLUDED
 #pragma clang system_header
@@ -15,6 +14,8 @@
 // no spanification warnings for system headers
 #else
 
+typedef __INTPTR_TYPE__ intptr_t;
+
 namespace std {
   class type_info;
   class bad_cast;