参考类
class commandsListClass
{
public:
std::string name;
std::string description;
std::vector<std::string> commands;
columnHeaders headersRequired;
void (*function)(System::Object ^ );
std::string recoveryFileHeader;
void reset()
{
name = "";
description = "";
commands.clear();
headersRequired.reset();
recoveryFileHeader = "";
function = dummyFunc; // dummyFunc uses the same members as the intended - this is to ensure it is defined. DummyFunc is empty, returns void etc
}
commandsListClass()
{
reset();
}
};
目前,如果我运行以下代码,编译器崩溃
// This crashes the compiler
System::Threading::ThreadPool::QueueUserWorkItem(gcnew System::Threading::WaitCallback(global::commandsList[index].function ), ti);
1>------ Build started: Project: MyProject, Configuration: Release x64 ------
1> project.cpp
1>c:\users\guy\documents\visual studio 2012\projects\MyProject\MyProject\Form1.h(807): fatal error C1001: An internal error has occurred in the compiler.
1> (compiler file 'msc1.cpp', line 1443)
1> To work around this problem, try simplifying or changing the program near the locations listed above.
1> Please choose the Technical Support command on the Visual C++
1> Help menu, or open the Technical Support help file for more information
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
如果我在调用函数内部声明一个成员,并将其设置为global :: commandsList [index] .function,则编译并正确运行
// This runs correctly
void (*func)(System::Object ^);
func = global::commandsList[index].function;
System::Threading::ThreadPool::QueueUserWorkItem(gcnew System::Threading::WaitCallback(func ), ti);
global :: commandsList是一个类型为commandsListClass
的向量有什么想法吗?浏览Google和SO建议将编译器更改为不优化,我试过没有成功。代码的编写方式如下:
非常感谢任何帮助。
编辑1:这是使用Visual Studio 2012,Windows 7 x64
答案 0 :(得分:0)
这是一个简化的回购:
public delegate void MyDel(Object^);
void g(Object^) {}
struct A {
static void(*fs)(Object^);
void(*f)(Object^);
gcroot<MyDel^> del;
};
void(*fg)(Object^);
void h()
{
void (*f)(Object^);
A a;
gcnew MyDel(f);
gcnew MyDel(fg);
gcnew MyDel(a.fs);
a.del = gcnew MyDel(g);
//gcnew MyDel(a.f); // this line fails
// work around
f = a.f;
gcnew MyDel(f);
}
只有非静态成员变量失败。看起来像编译器错误。使用本地中间人解决它。
或者更好的是卢卡斯建议使用gcroot。