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diff --git a/deps/libchdr/deps/zstd-1.5.5/build/meson/tests/valgrindTest.py b/deps/libchdr/deps/zstd-1.5.5/build/meson/tests/valgrindTest.py
new file mode 100644
index 00000000..05d84878
--- /dev/null
+++ b/deps/libchdr/deps/zstd-1.5.5/build/meson/tests/valgrindTest.py
@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+import os
+import subprocess
+import tempfile
+
+
+def valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench):
+  VALGRIND_ARGS = [valgrind, '--leak-check=full', '--show-leak-kinds=all', '--error-exitcode=1']
+
+  print('\n ---- valgrind tests : memory analyzer ----')
+
+  subprocess.check_call([*VALGRIND_ARGS, datagen, '-g50M'], stdout=subprocess.DEVNULL)
+
+  if subprocess.call([*VALGRIND_ARGS, zstd],
+                     stdout=subprocess.DEVNULL) == 0:
+    raise subprocess.SubprocessError('zstd without argument should have failed')
+
+  with subprocess.Popen([datagen, '-g80'], stdout=subprocess.PIPE) as p1, \
+       subprocess.Popen([*VALGRIND_ARGS, zstd, '-', '-c'],
+                        stdin=p1.stdout,
+                        stdout=subprocess.DEVNULL) as p2:
+    p1.stdout.close()  # Allow p1 to receive a SIGPIPE if p2 exits.
+    p2.communicate()
+    if p2.returncode != 0:
+      raise subprocess.SubprocessError()
+
+  with subprocess.Popen([datagen, '-g16KB'], stdout=subprocess.PIPE) as p1, \
+       subprocess.Popen([*VALGRIND_ARGS, zstd, '-vf', '-', '-c'],
+                        stdin=p1.stdout,
+                        stdout=subprocess.DEVNULL) as p2:
+    p1.stdout.close()
+    p2.communicate()
+    if p2.returncode != 0:
+      raise subprocess.SubprocessError()
+
+  with tempfile.NamedTemporaryFile() as tmp_fd:
+    with subprocess.Popen([datagen, '-g2930KB'], stdout=subprocess.PIPE) as p1, \
+         subprocess.Popen([*VALGRIND_ARGS, zstd, '-5', '-vf', '-', '-o', tmp_fd.name],
+                          stdin=p1.stdout) as p2:
+      p1.stdout.close()
+      p2.communicate()
+      if p2.returncode != 0:
+        raise subprocess.SubprocessError()
+
+    subprocess.check_call([*VALGRIND_ARGS, zstd, '-vdf', tmp_fd.name, '-c'],
+                          stdout=subprocess.DEVNULL)
+
+    with subprocess.Popen([datagen, '-g64MB'], stdout=subprocess.PIPE) as p1, \
+         subprocess.Popen([*VALGRIND_ARGS, zstd, '-vf', '-', '-c'],
+                          stdin=p1.stdout,
+                          stdout=subprocess.DEVNULL) as p2:
+      p1.stdout.close()
+      p2.communicate()
+      if p2.returncode != 0:
+        raise subprocess.SubprocessError()
+
+  subprocess.check_call([*VALGRIND_ARGS, fuzzer, '-T1mn', '-t1'])
+  subprocess.check_call([*VALGRIND_ARGS, fullbench, '-i1'])
+
+
+def main():
+  import argparse
+  parser = argparse.ArgumentParser(description='Valgrind tests : memory analyzer')
+  parser.add_argument('valgrind', help='valgrind path')
+  parser.add_argument('zstd', help='zstd path')
+  parser.add_argument('datagen', help='datagen path')
+  parser.add_argument('fuzzer', help='fuzzer path')
+  parser.add_argument('fullbench', help='fullbench path')
+
+  args = parser.parse_args()
+
+  valgrind = args.valgrind
+  zstd = args.zstd
+  datagen = args.datagen
+  fuzzer = args.fuzzer
+  fullbench = args.fullbench
+
+  valgrindTest(valgrind, datagen, fuzzer, zstd, fullbench)
+
+
+if __name__ == '__main__':
+  main()