=== tests/cases/compiler/genericFunctionSpecializations1.ts ===
function foo3<T>(test: string); // error
>foo3 : <T>(test: string) => any
>T : T
>test : string

function foo3<T>(test: T) { }
>foo3 : <T>(test: string) => any
>T : T
>test : T
>T : T

function foo4<T>(test: string); // valid
>foo4 : <T>(test: string) => any
>T : T
>test : string

function foo4<T extends String>(test: T) { }
>foo4 : <T>(test: string) => any
>T : T
>String : String
>test : T
>T : T