python3-asan

#!/usr/bin/env python3
from argparse import ArgumentParser
import os
import subprocess


def main():
    parser = ArgumentParser()
    parser.add_argument("-m")
    args, rest = parser.parse_known_args()

    script = """\
from os import environ
del environ["LD_PRELOAD"]
"""
    if args.m:
        script += f"""\
import {args.m}.__main__
"""
    else:
        script += """\
import sys
assert sys.argv[0] == "-c"
del sys.argv[0]
with open(sys.argv[0]) as fp:
    exec(compile(fp.read(), sys.argv[0], "exec"))
"""

    cc = os.environ.get("CC", "cc")
    # https://github.com/google/sanitizers/issues/934
    libstdcxx = (
        subprocess.check_output([cc, "-print-file-name=libstdc++.so"]).strip().decode()
    )
    libasan = (
        subprocess.check_output([cc, "-print-file-name=libasan.so"]).strip().decode()
    )

    # https://stackoverflow.com/questions/77894856
    argv = ["setarch", "--addr-no-randomize", "python3", "-c", script, *rest]
    os.execvpe(
        argv[0],
        argv,
        {
            **os.environ,
            "ASAN_OPTIONS": "detect_leaks=0",
            "LD_PRELOAD": os.pathsep.join((libasan, libstdcxx)),
        },
    )


if __name__ == "__main__":
    main()