I find the behavior of the following code unexpected.

bool foo(alias f)()
{
	return is(typeof(f) == int);
}

unittest
{
	{
		int a;
		static assert(foo!a);
	}
	{
		float a;
		static assert(foo!a); // passes unexpectedly
	}
}

The second assert passes unexpectedly. If you change the variable name to b it
fails as expected. Bug or not so unexpected behavior? To me it's a bug. But
maybe there is a explanation that I'm not aware of.

The same behavior is observed when foo is defined as a template.

This is dmd v2.066.0 on Linux.