题
我正在测试一个具有许多基本相同形式的功能的C ++类:
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,我想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,编译器似乎并不同意这是一个好主意...
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。如果有人可以指出我做错了什么,我会很感激。
谢谢,保罗
解决方案
错误是在您的代码中,而不是在 bind
. 。您通过一个不期望任何参数的函数。而不是您的电话,请
DoTest< DATATYPE >( boost::bind( &ClassUnderTest::SomeFunction, &t, _1) );
如果您省略 _1
然后 bind
将创建一个零词汇函数对象,并且成员函数(期望数据指针)在调用时会错过一个参数 bind
.
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