MFC 应用程序在关闭时崩溃
我有一个正在运行的 MFC 应用程序（一个对话框应用程序），我删除了它的一些按钮并添加了一个新按钮，但现在当它关闭时，应用程序崩溃了。它在 ASSERT() 宏之一中失败。调试断言在这些行上失败
文件：afxtempl.h 行：558
当我查看该代码时，它是这样的 有
template<class TYPE, class ARG_TYPE>
void CArray<TYPE, ARG_TYPE>::AssertValid() const
{
CObject::AssertValid();
if (m_pData == NULL)
{
ASSERT(m_nSize == 0);
ASSERT(m_nMaxSize == 0);
}
else
{
// here it fails
ASSERT(m_nSize >= 0);
ASSERT(m_nMaxSize >= 0);
ASSERT(m_nSize <= m_nMaxSize);
ASSERT(AfxIsValidAddress(m_pData, m_nMaxSize * sizeof(TYPE)));
}
}
#endif //_DEBUG
任何线索表明出了什么问题吗？该应用程序早些时候运行良好，但我搞砸了。
I had a working MFC application (a dialog application), I deleted some of its button and added a new button, but now when it closes the application crashes. It fails in one of ASSERT() macro. The debug assertions fails on these lines
File: afxtempl.h
Line: 558
When I view that code it was something like this
template<class TYPE, class ARG_TYPE>
void CArray<TYPE, ARG_TYPE>::AssertValid() const
{
CObject::AssertValid();
if (m_pData == NULL)
{
ASSERT(m_nSize == 0);
ASSERT(m_nMaxSize == 0);
}
else
{
// here it fails
ASSERT(m_nSize >= 0);
ASSERT(m_nMaxSize >= 0);
ASSERT(m_nSize <= m_nMaxSize);
ASSERT(AfxIsValidAddress(m_pData, m_nMaxSize * sizeof(TYPE)));
}
}
#endif //_DEBUG
Any clues as to what is going wrong? The application was working fine when earlier, but I messed it up.
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我想查看导致断言的堆栈跟踪中的内容 - 以及各个成员变量中的内容。例如，如果原因是双重删除，则在调试版本中，您会期望在值中看到值 0xdddddddd，因为调试分配器将释放的内存设置为此值。
I'd want to see what is in the stack trace leading up to the assertion - also what is in the various member variables. For example, if the cause is a double deletion, in a debug build you would expect to see the value 0xdddddddd in the value since the debug allocator sets freed memory to this value.
当我无意中在
resource.h中定义了重复的资源 id 时，我就遇到过这样疯狂的事情。如果您唯一更改的是添加/删除一些按钮，我会首先检查这一点，然后尝试完全重建。I've see crazy things like this when I've inadvertently got duplicate resource ids defined in
resource.h. If the only thing you've changed is add/remove a few buttons, I would check this first then try a full rebuild.几个月前，我遇到了同样的问题 - MFC 在关闭时崩溃。后来发现在析构函数中我试图删除或释放一些已经删除的内存，但不知何故通过了它之前的空检查。也许你可以检查这一点。
Few months ago I have the same kind of problem - MFC crash on closing. Later found that in a destructor I was trying to delete or free some memory which is already deleted but somehow passing the null checking before it.May be you can check this point.