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=== tests/cases/compiler/typeParameterFixingWithContextSensitiveArguments2.ts ===
function f<T, U>(y: T, y1: U, p: (z: U) => T, p1: (x: T) => U): [T, U] { return [y, p1(y)]; }
>f : <T, U>(y: T, y1: U, p: (z: U) => T, p1: (x: T) => U) => [T, U]
>y : T
>y1 : U
>p : (z: U) => T
>z : U
>p1 : (x: T) => U
>x : T
>[y, p1(y)] : [T, U]
>y : T
>p1(y) : U
>p1 : (x: T) => U
>y : T
interface A { a: A; }
>a : A
interface B extends A { b; }
>b : any
var a: A, b: B;
>a : A
>b : B
var d = f(a, b, x => x, x => x); // A => A not assignable to A => B
>d : [A, B]
>f(a, b, x => x, x => x) : [A, B]
>f : <T, U>(y: T, y1: U, p: (z: U) => T, p1: (x: T) => U) => [T, U]
>a : A
>b : B
>x => x : (x: B) => B
>x : B
>x : B
>x => x : (x: A) => A
>x : A
>x : A
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