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-rw-r--r--Objects/fileobject.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 10e8391fb4..313f1d0ac5 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -3,7 +3,7 @@
#define PY_SSIZE_T_CLEAN
#include "Python.h"
-#if defined(HAVE_GETC_UNLOCKED) && !defined(MEMORY_SANITIZER)
+#if defined(HAVE_GETC_UNLOCKED) && !defined(_Py_MEMORY_SANITIZER)
/* clang MemorySanitizer doesn't yet understand getc_unlocked. */
#define GETC(f) getc_unlocked(f)
#define FLOCKFILE(f) flockfile(f)