Address of private method from another module can be taken

[dlangBugzillaToGithub]

rswhite4 reported this on 2013-10-12T12:20:03Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=11234

CC List

• Andrej Mitrovic (@AndrejMitrovic)

Description

A.d:
----
import B;

class Foo {
public:
	void call(Bar b) {
		void delegate(int) dg = &b.test;
		dg(42);
	}
}

void main() {
	Bar b = new Bar();
	Foo f = new Foo();
	f.call(b);
}
----

B.d:
----
import std.stdio;

class Bar {
private:
	void test(int id) {
		writeln("Bar called with ", id);
	}
}
----

Output: Bar called with 42
But should be rejected.

[dlangBugzillaToGithub]

andrej.mitrovich (@AndrejMitrovic) commented on 2013-10-12T12:23:34Z

Reduced a little bit:

-----
module a;
import b;

void main()
{
    auto s = S();
    auto f = &s.f;  // no error
    f();  // no error

    auto sf = &S.sf;  // error
}
-----

-----
module b;
struct S
{
    private void f() { }
    private static void sf() { }
}
-----

[dlangBugzillaToGithub]

rswhite4 commented on 2013-10-12T12:29:08Z

I'm unsure, but maybe we should also classify this as major because it breaks the protection?