第一次机会异常（ntdll.dll）

Question

Any ideas why I am getting this error?

This is the full error:

First-chance exception at 0x77202282 (ntdll.dll) in Test.exe 0xC0000005: Access violation writing location 0x0000004

Unhandle exception at 0x77202282 (ntdll.dll) in Test.exe 0xC0000005: Access violation writing location 0x0000004

• Debugging breaks at the line Grid::Grid() .
• Root.hpp contains a private member static Grid grid; .
• Root.cpp initializes this Grid Root::Grid;

I do have SFML linked statically, which has caused me a bit of trouble.

This is a small example which exhibits this error:

#include <fstream>
#include <sstream>
#include <Windows.h>

#include "Root.hpp"

Grid Root::grid;

int main (uchar argc, char **argv) {
    Root root;
    Root::Prepare(root);
    return Root::GetStatus();
}

The constructor as follows:

Grid::Grid() {
    Width = 100;
    Height = 100;
}

The call stack:

ntdll.dll!772022b2()    Unknown
[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll] 
Test.exe!sf::priv::MutexImpl::lock(void)    Unknown
Test.exe!sf::Mutex::lock(void)  Unknown
Test.exe!sf::Lock::Lock(class sf::Mutex &)  Unknown
Test.exe!sf::GlResource::GlResource(void)   Unknown
Test.exe!sf::Texture::Texture(void) Unknown
>   Test.exe!Grid::Grid() Line 5    C++
Test.exe!`dynamic initializer for 'Root::grid''() Line 11   C++
msvcr110d.dll!_initterm(void (void) * * pfbegin, void (void) * * pfend) Line 894    C
Test.exe!__tmainCRTStartup() Line 460   C
Test.exe!mainCRTStartup() Line 377  C
kernel32.dll!767533aa() Unknown
ntdll.dll!77219ef2()    Unknown
ntdll.dll!77219ec5()    Unknown

Answer 1

Even without having your full source code, the exception you're getting, and the stack you show, look suspiciously similar to another solved Stack Overflow posting:

" Unhandled exception at 0x777122D2 (ntdll.dll) in ArticxEngine.exe: 0xC0000005: Access violation writing location 0x00000004 "

Your stack shows that Grid() is derived from SFML's Texture(), which is derived in turn from GlResource(). The problem is that your grid is a static variable which is getting constructed before GlResource()'s internal mutex is.

The solution is the same as the other Stack Overflow posting: make sure your Grid object is non-static and is constructed after your main() begins running.