Python扩展上的Valgrind：块中的字节可能丢失 我一直试图在PybDn11 C++ Python扩展中识别内存问题。虽然以前需要编译禁用PyMalloc的Python调试版本，但就我所知，对于Python3.6和更高版本，设置PYTHONMALLOC=malloc（参见示例）就足够了。然而，即使这样，我也看到大量的错误，形式是N个字节（M个块）可能在丢失记录X或Y中丢失

我可以用一个简单的例子来重现这一点

// demo.cpp
#include <iostream>
#include <pybind11/pybind11.h>

namespace py = pybind11;

void run() {
        std::cout << "Hello, World!\n";
}

PYBIND11_MODULE(pydemo, m)
{
        m.def("run", &run);
}


# demo.py
import pydemo

pydemo.run()

我做错什么了吗？即使Python使用malloc，我仍然需要使用抑制文件吗？基于上面链接的CPython文档文件，它听起来像是禁用PyMalloc的替代文件

我正在WSL2上运行Ubuntu20.04 LTS：

$ python --version
Python 3.8.5
$ g++ --version
g++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ python --version
Python 3.8.5
$ g++ --version
g++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.