Overloaded static member function call inside lambda body doesn't compile

Question

So basically here is the simplified version of my code that doesn't compile:

class MyClass
{
    static void foo(X)
    {
        //do something
    }
    
    static void foo(Y)
    {
        //do something
    }
    
    static void bar()
    {
        std::for_each(collection->begin(), collection->end(),
          [&](X& elem)
        {
          foo(elem); //this call generates the error
        });
    }   
};

Compiler: MSVC 2010 with SP1 installed The error message it generates is: error C3861: 'foo': identifier not found

The error doesn't occur if I rename either foo() function, or if I call it outside the lambda.

Update:

I managed to solve this by explicitly qualifying foo(). The interesting part is that ::MyClass::foo(elem) works but MyClass::foo(elem) does not.

Hate to fuss, but what's the exact signature of each foo? Clearly not foo(X) and foo(Y) — doctorlove
– doctorlove, Commented Oct 5, 2013 at 13:15
Looks like a similar problem to this stackoverflow.com/questions/14388520/… — doctorlove
– doctorlove, Commented Oct 5, 2013 at 13:33
I stripped down the real code. X and Y are some types. The [&] is irrelevant, I just left it there accidentally. — Unichron
– Unichron, Commented Oct 5, 2013 at 13:52

Daniel Frey · Accepted Answer · 2013-10-05 13:16:05Z

5

Try to explicitly qualify foo:

MyClass::foo(elem);

(which might be a required work-around for a MSVC10 bug, GCC accepts your code without qualification)

answered Oct 5, 2013 at 13:16

Daniel Frey

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3 Comments

Unichron Over a year ago

Doesn't work, but the error message is changed: error C2065: '__this' : undeclared identifier error C2227: left of '->foo' must point to class/struct/union/generic type error C2232: '->MyClass::foo' : left operand has '' type, use '.'

Unichron Over a year ago

I marked this as accepted because it got me closer to the solution, although it was only partially correct.

Daniel Frey Over a year ago

@user2849493 Wow, MSVC is even more broken than I thought. :) Glad it helped you to figure out the final solution.

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