gh-132070: add `PyObject_Realloc` suppression in free-threading (#132468)

diff --git a/Tools/tsan/suppressions_free_threading.txt b/Tools/tsan/suppressions_free_threading.txt
index b0d64d369969202e27f053ec23df122a580353a9..21224e490b8160bada48f38df5d42edbe19cee01 100644 (file)
--- a/Tools/tsan/suppressions_free_threading.txt
+++ b/Tools/tsan/suppressions_free_threading.txt
@@ -43,3 +43,7 @@ race_top:rangeiter_next
 # of ptr-sized copies to be thread-safe. (Issue #129069)
 race:list_ass_slice_lock_held
 race:list_inplace_repeat_lock_held
+
+# PyObject_Realloc internally does memcpy which isn't atomic so can race
+# with non-locking reads. See #132070
+race:PyObject_Realloc
\ No newline at end of file