=== tests/cases/compiler/interfaceInheritance2.ts ===
interface I6 {
>I6 : Symbol(I6, Decl(interfaceInheritance2.ts, 0, 0))

 ():void;
}

interface I7 extends I6 { }
>I7 : Symbol(I7, Decl(interfaceInheritance2.ts, 2, 1))
>I6 : Symbol(I6, Decl(interfaceInheritance2.ts, 0, 0))

var v1:I7;
>v1 : Symbol(v1, Decl(interfaceInheritance2.ts, 6, 3))
>I7 : Symbol(I7, Decl(interfaceInheritance2.ts, 2, 1))

v1();
>v1 : Symbol(v1, Decl(interfaceInheritance2.ts, 6, 3))