OSS-Fuzz: Move fuzzer to upstream repository

Signed-off-by: Arthur Chan <arthur.chan@adalogics.com>

Author: arthurscchan

tests/fuzz/pybind_fuzzer.cc

@@ -0,0 +1,51 @@
+/* Copyright 2023 Google LLC
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+      http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#include <fuzzer/FuzzedDataProvider.h>
+#include <iostream>
+#include <string>
+#include "pybind11/embed.h"
+#include "pybind11/pybind11.h"
+
+namespace py = pybind11;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  FuzzedDataProvider fdp(data, size);
+
+  static py::scoped_interpreter guard{};
+  try {
+    auto locals = py::dict();
+    py::exec(fdp.ConsumeRandomLengthString().c_str(), py::globals(), locals);
+  } catch (pybind11::error_already_set &e) {
+  }
+
+  try {
+    py::object os = py::module_::import("os");
+    py::object makedirs = os.attr(fdp.ConsumeRandomLengthString().c_str());
+  } catch (py::error_already_set &e) {
+  }
+
+  try {
+    py::tuple args =
+        py::make_tuple(fdp.ConsumeRandomLengthString().c_str(), py::none());
+    py::object Decimal = py::module_::import("decimal").attr("Decimal");
+    py::object pi = Decimal(fdp.ConsumeRandomLengthString().c_str());
+    py::object exp_pi = pi.attr(fdp.ConsumeRandomLengthString().c_str())();
+  } catch (py::error_already_set &e) {
+  }
+
+  try {
+    py::object obj = py::str(fdp.ConsumeRandomLengthString().c_str());
+  } catch (py::error_already_set &e) {
+  }
+  return 0;
+}

tests/test_gil_scoped.py

@@ -195,7 +195,10 @@ def _intentional_deadlock():
     m.intentional_deadlock()
 
 
-ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK = (*ALL_BASIC_TESTS, _intentional_deadlock)
+ALL_BASIC_TESTS_PLUS_INTENTIONAL_DEADLOCK = (
+    *ALL_BASIC_TESTS,
+    pytest.param(_intentional_deadlock, marks=skipif_not_free_threaded),
+)
 
 
 def _run_in_process(target, *args, **kwargs):