the following is trying to deduce the variadic call to a chain of function call.
the problem is only appeard on current DMD when deduce the last parameter type double
it matches both
this(float y,A a...)
and
this(float y)

but actually it should just match this(float y) , and this would result the correct
chain of calling.

import std.stdio;
import std.string;
class A
{
    static char[][] output;
    this(int x,A a...){
	    output~= format(`int`,x);
    }
 /*   this(float x, A a...)
    {
    }*/
    this(int x)
    {
	    output~= format(`int`,x);
    }
    this(float x)
    {
	    output~= format(`float`,x);
    }
}

void func(A a...)
{
    foreach_reverse(k;a.output)
    {
  	writef(k);
    }
    a.output.length = 0;
}

void main()
{
	func(1,4,2.0);
	func(1,5,2.0);
}