1 files changed, 1 insertions, 1 deletions
diff --git a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp
index 8f840242a46..7b7ccf3b05e 100644
--- a/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp
+++ b/clang-tools-extra/test/clang-tidy/cppcoreguidelines-no-malloc.cpp
@@ -1,6 +1,6 @@
 // RUN: %check_clang_tidy %s cppcoreguidelines-no-malloc %t
 
-using size_t = unsigned long;
+using size_t = __SIZE_TYPE__;
 
 void *malloc(size_t size);
 void *calloc(size_t num, size_t size);