[C/C++ Python]程序神奇崩溃，请人解释一下这是什么玄学编程

Question

问题遇到的现象和发生背景

再写一个东西的mod功能，然后用了python的c/c++SDK，然后开始用得很爽，结果mingw的玄学属实把我吓到了，那个部分的一开始的源代码如下:（用的IDE:Codeblocks 2020 mingw 64 SEH）

问题相关代码，请勿粘贴截图

        al("Getting initialized values...");//日志输出函数
        ///Getting inited values
        //outs: #define outs(A) cout << string(#A ":\n") << A << endl;
        outs(PyObject_GetAttrString(GetPm().mlcPointer,MENU_STRINGS_ITEM));
        showingStrings = getStringLists(PyObject_GetAttrString(GetPm().mlcPointer,MENU_STRINGS_ITEM));
        outs(showingStrings[0]);

运行结果及报错内容

这是输出:

[2022-02-09 18:51:56]:652ms:This mod "More Titles" path "C:\Users\yd\AppData\Roaming\XXXX\XXXX\Mods\MT.mtmod"'s OnInit function returns False in python.It loaded fail!

load mod "C:\Users\yd\AppData\Roaming\StudyAll\MineTerraria\Mods\MT.mtmod" fail!
[2022-02-09 18:51:56]:662ms:Getting initialized values...

GetPm().mlcPointer:
0xbcd7268

Process returned -1073741819 (0xC0000005)   execution time : 8.593 s
Press any key to continue.

我的解答思路和尝试过的方法

之后我加了两句没有用的话（目的是为了看看python是不是把指针迁移了，导致出现错误)，修改代码如下:

        al("Getting initialized values...");
          ///Getting inited values
        outs(PyObject_GetAttrString(GetPm().mlcPointer,MENU_STRINGS_ITEM));
        outs(PyObject_GetAttrString(GetPm().kernel,"mlc"));//第一句
        outs(GetPm().mlcPointer);//第二句
        showingStrings = getStringLists(PyObject_GetAttrString(GetPm().mlcPointer,MENU_STRINGS_ITEM));
        outs(showingStrings[0]);

结果却出现了玄学情况：

PyObject_GetAttrString(GetPm().mlcPointer,MENU_STRINGS_ITEM):
0
PyObject_GetAttrString(GetPm().kernel,"mlc"):
0xbca7268
GetPm().mlcPointer:
0xbca7268
showingStrings[0]:
Try playing Minecraft!!!!
[2022-02-09 18:55:49]:636ms:Checking mods' logs...

*****************************************************

[2022-02-09 18:55:49]:646ms:Here are the mod logs that are listed:

''

*****************************************************

它竟然没崩掉！

我想要达到的结果

我只是想知道这是为什么（我还尝试了Py_Incref(GetPm().mlcPointer)与Py_Decref(GetPm().mlcPointer)来看看是不是引用的问题，然而，很可惜，崩溃了，应该不是内存引用的问题）
######崩溃的外在原因
以下是加载的"模组"python代码:

# 这个是api,还没上高中，英语不好，许多英语句子语法不对，勿喷
# mtmod_loader.py
'''
Import Suggestions:
    from mtmod_loader import *
Using Docs:
Loading dods has many steps
While in version 1.0,it has only 1 step:
    Initializing
    
Initializing:
    To init,you need to have a function OnInit()
'''
# We suggest you not to change mlc directly
class ModLoaderConfig:
    #Strings that shows on the menu
    menuStrings = []
    # Very Warning:Do not change this value,or mod loading proc will fail!
    # now loading proc!DO NOT CHANGE IT!!THIS IS VERY IMPORTANT DATA
    nowProc = 0
    # the mod's log
    modLog = ''
    #the statuses
    menuLock = False
'''
The Manifest file's attributes
You can easily get them
'''
class ManifestFileSets:
    # Mod Name
    ModName = ""
    # This Mod's Version
    ModVersion = ""
    # The Mod's Creator
    ModAuthor = ""
    # The Mod's Description
    ModDescription = ""
    # The Only Package ID,Make sure this id is the only one!!!!
    ModPackage = ""
    
mlc = ModLoaderConfig()
mf = ManifestFileSets()
apiVersion = "api-1.0"

MenuLocked = 2
NowIsNotIniting = 1
Suc = 0
Fail = -1

'''
Lock the menu,other mods cannot change menuString if they follows the usual steps
'''
def lockMenu():
    mlc.menuLock = True

'''
Set the strings shows upon the menu
'''
def setMenuString(menuStr):
    if(mlc.menuLock):
        return MenuLocked
    if(mlc.nowProc == 0):
        mlc.menuStrings = menuStr
        return Suc
    else:
        return NowIsNotIniting
def sms(menuStr):
    return setMenuString(menuStr)

'''
Append the strings that shows on the menu
'''
def appendMenuString(nstr):
    mlc.menuStrings.append(str(nstr))
def ams(nstr):
    appendMenuString(nstr)

'''
Get the strings that shows on the menu
'''
def getMenuString():
    return mlc.menuStrings
def gms():
    return mlc.menuStrings
'''
Get the loading proc now
'''
def getLoadingProcess():
    return mlc.nowProc
def glp():
    return mlc.nowProc
'''
Write the program log
'''
def writeModLog(strlg):
    mlc.modLog += str(strlg)
def wml(strlg):
    writeModLog(strlg)

这个是模组的代码

# main.py
from mtmod_loader import *

def OnInit():
    print('Initializing mod',mf.ModName);
    l = getMenuString()
    l.append("More Titles is a mod which adds a lots titles to the main menu screen!")
    l.crashDump() #list中没有这个成员，这个是专门测试崩溃的
    setMenuString(l)
    print(getMenuString())
    print('Done initializing mod',mf.ModName);
    return False

Answer 1

这种问题你只有自己设断点，然后单步调试，来找到出问题的地方。仅从上面提供的信息，别人很难帮你查出问题的根源。
另外，你可以试试用boost.python库来导出C/C++写的模块到python，boost.python接口要比Python自带的SDK好用些，至少更贴近C++，更人性化些。