Question

我正在测试一个C ++类，其中包含许多基本相同形式的函数：

ClassUnderTest t;

DATATYPE data = { 0 };
try
{
    t.SomeFunction( &data );
}
catch( const SomeException& e )
{
    // log known error
}
catch( ... )
{
    // log unknown error
}

由于有很多这些，我以为我会写一个功能来完成大部分繁重的工作：

template< typename DATA, typename TestFunction >
int DoTest( TestFunction test_fcn )
{
    DATA data = { 0 };
    try
    {
        test_fcn( &data );
    }
    catch( const SomeException& e )
    {
        // log known error
        return FAIL;
    }
    catch( ... )
    {
        // log unknown error
        return FAIL;
    }
    return TRUE;
}

ClassUnderTest t;
DoTest< DATATYPE >( boost::bind( &ClassUnderTest::SomeFunction, boost::ref( t ) ) );

但是，编译器似乎并不认同这是一个好主意......

Warning 1   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\bind.hpp   1657
Warning 2   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 318
Warning 3   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 326
Warning 4   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 331
Warning 5   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 345
Warning 6   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 350
Warning 7   warning C4180: qualifier applied to function type has no meaning; ignored   c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 362
Error   8   fatal error C1001: An internal error has occurred in the compiler.  c:\boost\boost_1_41_0\boost\bind\mem_fn.hpp 328

我正在使用Visual Studio 2008 SP1。如果有人能够指出我做错了什么，我将不胜感激。

谢谢， PaulH

Answer 1

错误在您的代码中，而不在bind中。你传递了一个不期望任何参数的仿函数。而不是你的电话，

DoTest< DATATYPE >( boost::bind( &ClassUnderTest::SomeFunction, &t, _1) );

如果省略_1，则bind将创建零参数函数对象，并且成员函数（需要数据指针）在bind调用时将遗漏一个参数。

内部编译器错误和boost :: bind

1 个答案: