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#!/usr/bin/env python3
# Copyright 2020 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""
Launcher for the foozzie differential-fuzzing harness. Wraps foozzie
with Python2 for backwards-compatibility when bisecting.
Obsolete now after switching to Python3 entirely. We keep the launcher
for a transition period.
"""
import re
import shutil
import subprocess
import sys
def find_harness_code(args):
for arg in args:
if arg.endswith('v8_foozzie.py'):
with open(arg) as f:
return f.read()
assert False, 'Foozzie harness not found'
if __name__ == '__main__':
# In some cases or older versions, the python executable is passed as
# first argument. Let's be robust either way, with or without full
# path or version.
if re.match(r'.*python.*', sys.argv[1]):
args = sys.argv[2:]
else:
args = sys.argv[1:]
python_exe = 'python3'
# To ease bisection of really old bugs, attempt to use Python2 as long
# as it is supported. This enables bisection before the point where the
# harness switched to Python3.
script = find_harness_code(args)
use_python3 = script.startswith('#!/usr/bin/env python3')
if not use_python3 and shutil.which('python2'):
python_exe = 'python2'
process = subprocess.Popen([python_exe] + args)
process.communicate()
sys.exit(process.returncode)
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