The following program :
=================================
struct A {
	A& operator=(const A&) = delete;

	void operator=(int) {}
	void operator=(char) {}
};

struct B {};

int main()
{
	A a;
	a = B(); // no match
	a = 1.0; // ambiguous
}
==============================

produces, with g++ -std=c++0x, current trunk version, the following
two error messages :

test_note_deleted_function.cpp: In function 'int main()':
test_note_deleted_function.cpp:13: error: no match for 'operator=' in 'a = B()'
test_note_deleted_function.cpp:2: note: candidates are: A& A::operator=(const A&)
test_note_deleted_function.cpp:4: note:                 void A::operator=(int)
test_note_deleted_function.cpp:5: note:                 void A::operator=(char)
test_note_deleted_function.cpp:14: error: ambiguous overload for 'operator=' in 'a = 1.0e+0'
test_note_deleted_function.cpp:4: note: candidates are: void A::operator=(int)
test_note_deleted_function.cpp:5: note:                 void A::operator=(char)


Note how the deleted assignment operator is listed as candidate in the
"no match" error.  It should probably be removed.

The "ambiguous overload" case does not mention it as candidate, which I think is the right thing to do.