============================== a.d ======================
template FFF()
{
	class A : B
	{
		this(){}
	}
	class B
	{
	}
}
void main()
{
	mixin FFF;
}
==========================================================
C:\dev>dmd a.d
FuncDeclaration::semantic3(constructor 'this', sc = 0098A7E8)
Assertion failure: '0' on line 373 in file 'func.c'
abnormal program termination