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Fixed instantiation expression type param leak in body-less arrows #61054
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81 changes: 81 additions & 0 deletions
81
tests/baselines/reference/instantiationExpressionNoTypeParameterLeak1.symbols
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| //// [tests/cases/compiler/instantiationExpressionNoTypeParameterLeak1.ts] //// | ||
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| === instantiationExpressionNoTypeParameterLeak1.ts === | ||
| // https://github.com/microsoft/TypeScript/issues/61041 | ||
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| export const test1 = <X,>(g: <A>(x: X) => X) => g<string>; | ||
| >test1 : Symbol(test1, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 12)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 22)) | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 26)) | ||
| >A : Symbol(A, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 30)) | ||
| >x : Symbol(x, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 33)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 22)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 22)) | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 26)) | ||
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| export const output1 = test1<number>((y: number) => 1); | ||
| >output1 : Symbol(output1, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 3, 12)) | ||
| >test1 : Symbol(test1, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 2, 12)) | ||
| >y : Symbol(y, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 3, 38)) | ||
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| output1(1); | ||
| >output1 : Symbol(output1, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 3, 12)) | ||
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| export function test2<X>(g: <A>(x: X) => X) { | ||
| >test2 : Symbol(test2, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 4, 11)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 22)) | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 25)) | ||
| >A : Symbol(A, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 29)) | ||
| >x : Symbol(x, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 32)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 22)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 22)) | ||
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| return g<string>; | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 6, 25)) | ||
| } | ||
| export const output2 = test2<number>((y: number) => 1); | ||
| >output2 : Symbol(output2, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 9, 12)) | ||
| >test2 : Symbol(test2, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 4, 11)) | ||
| >y : Symbol(y, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 9, 38)) | ||
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| output2(1); | ||
| >output2 : Symbol(output2, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 9, 12)) | ||
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| export const test3 = <X,>(g: <A>() => (x: X) => X) => g<string>(); | ||
| >test3 : Symbol(test3, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 12)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 22)) | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 26)) | ||
| >A : Symbol(A, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 30)) | ||
| >x : Symbol(x, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 39)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 22)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 22)) | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 26)) | ||
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| export const output3 = test3<number>(() => (y: number) => 1); | ||
| >output3 : Symbol(output3, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 13, 12)) | ||
| >test3 : Symbol(test3, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 12, 12)) | ||
| >y : Symbol(y, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 13, 44)) | ||
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| output3(1); | ||
| >output3 : Symbol(output3, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 13, 12)) | ||
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| export function test4<X>(g: <A>() => (x: X) => X) { | ||
| >test4 : Symbol(test4, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 14, 11)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 22)) | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 25)) | ||
| >A : Symbol(A, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 29)) | ||
| >x : Symbol(x, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 38)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 22)) | ||
| >X : Symbol(X, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 22)) | ||
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| return g<string>(); | ||
| >g : Symbol(g, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 16, 25)) | ||
| } | ||
| export const output4 = test4<number>(() => (y: number) => 1); | ||
| >output4 : Symbol(output4, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 19, 12)) | ||
| >test4 : Symbol(test4, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 14, 11)) | ||
| >y : Symbol(y, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 19, 44)) | ||
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| output4(1); | ||
| >output4 : Symbol(output4, Decl(instantiationExpressionNoTypeParameterLeak1.ts, 19, 12)) | ||
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153 changes: 153 additions & 0 deletions
153
tests/baselines/reference/instantiationExpressionNoTypeParameterLeak1.types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| //// [tests/cases/compiler/instantiationExpressionNoTypeParameterLeak1.ts] //// | ||
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| === instantiationExpressionNoTypeParameterLeak1.ts === | ||
| // https://github.com/microsoft/TypeScript/issues/61041 | ||
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| export const test1 = <X,>(g: <A>(x: X) => X) => g<string>; | ||
| >test1 : <X>(g: <A>(x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| ><X,>(g: <A>(x: X) => X) => g<string> : <X>(g: <A>(x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >g : <A>(x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^ | ||
| >x : X | ||
| > : ^ | ||
| >g<string> : (x: X) => X | ||
| > : ^ ^^ ^^^^^ | ||
| >g : <A>(x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^ | ||
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| export const output1 = test1<number>((y: number) => 1); | ||
| >output1 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test1<number>((y: number) => 1) : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test1 : <X>(g: <A>(x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >(y: number) => 1 : (y: number) => number | ||
| > : ^ ^^ ^^^^^^^^^^^ | ||
| >y : number | ||
| > : ^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| output1(1); | ||
| >output1(1) : number | ||
| > : ^^^^^^ | ||
| >output1 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| export function test2<X>(g: <A>(x: X) => X) { | ||
| >test2 : <X>(g: <A>(x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >g : <A>(x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^ | ||
| >x : X | ||
| > : ^ | ||
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| return g<string>; | ||
| >g<string> : (x: X) => X | ||
| > : ^ ^^ ^^^^^ | ||
| >g : <A>(x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^ | ||
| } | ||
| export const output2 = test2<number>((y: number) => 1); | ||
| >output2 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test2<number>((y: number) => 1) : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test2 : <X>(g: <A>(x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >(y: number) => 1 : (y: number) => number | ||
| > : ^ ^^ ^^^^^^^^^^^ | ||
| >y : number | ||
| > : ^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| output2(1); | ||
| >output2(1) : number | ||
| > : ^^^^^^ | ||
| >output2 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| export const test3 = <X,>(g: <A>() => (x: X) => X) => g<string>(); | ||
| >test3 : <X>(g: <A>() => (x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| ><X,>(g: <A>() => (x: X) => X) => g<string>() : <X>(g: <A>() => (x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >g : <A>() => (x: X) => X | ||
| > : ^ ^^^^^^^ | ||
| >x : X | ||
| > : ^ | ||
| >g<string>() : (x: X) => X | ||
| > : ^ ^^ ^^^^^ | ||
| >g : <A>() => (x: X) => X | ||
| > : ^ ^^^^^^^ | ||
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| export const output3 = test3<number>(() => (y: number) => 1); | ||
| >output3 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test3<number>(() => (y: number) => 1) : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test3 : <X>(g: <A>() => (x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >() => (y: number) => 1 : () => (y: number) => number | ||
| > : ^^^^^^^ ^^ ^^^^^^^^^^^ | ||
| >(y: number) => 1 : (y: number) => number | ||
| > : ^ ^^ ^^^^^^^^^^^ | ||
| >y : number | ||
| > : ^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| output3(1); | ||
| >output3(1) : number | ||
| > : ^^^^^^ | ||
| >output3 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| export function test4<X>(g: <A>() => (x: X) => X) { | ||
| >test4 : <X>(g: <A>() => (x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >g : <A>() => (x: X) => X | ||
| > : ^ ^^^^^^^ | ||
| >x : X | ||
| > : ^ | ||
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| return g<string>(); | ||
| >g<string>() : (x: X) => X | ||
| > : ^ ^^ ^^^^^ | ||
| >g : <A>() => (x: X) => X | ||
| > : ^ ^^^^^^^ | ||
| } | ||
| export const output4 = test4<number>(() => (y: number) => 1); | ||
| >output4 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test4<number>(() => (y: number) => 1) : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >test4 : <X>(g: <A>() => (x: X) => X) => (x: X) => X | ||
| > : ^ ^^ ^^ ^^^^^^ ^^ ^^^^^ | ||
| >() => (y: number) => 1 : () => (y: number) => number | ||
| > : ^^^^^^^ ^^ ^^^^^^^^^^^ | ||
| >(y: number) => 1 : (y: number) => number | ||
| > : ^ ^^ ^^^^^^^^^^^ | ||
| >y : number | ||
| > : ^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
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| output4(1); | ||
| >output4(1) : number | ||
| > : ^^^^^^ | ||
| >output4 : (x: number) => number | ||
| > : ^ ^^^^^^^^^^^^^^^^^^^ | ||
| >1 : 1 | ||
| > : ^ | ||
|
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24 changes: 24 additions & 0 deletions
24
tests/cases/compiler/instantiationExpressionNoTypeParameterLeak1.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| // @strict: true | ||
| // @noEmit: true | ||
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| // https://github.com/microsoft/TypeScript/issues/61041 | ||
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| export const test1 = <X,>(g: <A>(x: X) => X) => g<string>; | ||
| export const output1 = test1<number>((y: number) => 1); | ||
| output1(1); | ||
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| export function test2<X>(g: <A>(x: X) => X) { | ||
| return g<string>; | ||
| } | ||
| export const output2 = test2<number>((y: number) => 1); | ||
| output2(1); | ||
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| export const test3 = <X,>(g: <A>() => (x: X) => X) => g<string>(); | ||
| export const output3 = test3<number>(() => (y: number) => 1); | ||
| output3(1); | ||
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| export function test4<X>(g: <A>() => (x: X) => X) { | ||
| return g<string>(); | ||
| } | ||
| export const output4 = test4<number>(() => (y: number) => 1); | ||
| output4(1); | ||
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The leaked type param was filtered out by the call to
isTypeParameterPossiblyReferencedingetObjectTypeInstantiation. It was crucial for the bug that a body-less arrow function returned the instantiation expression. With a block function bodyisTypeParameterPossiblyReferencedwould already returntrue.