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[AutoDiff] Add SR-12744 negative test. #31680

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Merged
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May 9, 2020
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[AutoDiff] Add SR-12744 negative test. #31680

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19 changes: 19 additions & 0 deletions test/AutoDiff/compiler_crashers/sr12744-unhandled-pullback-indirect-result.swift
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Original file line number Diff line number Diff line change
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// RUN: not --crash %target-swift-frontend -emit-sil -verify %s
// REQUIRES: asserts

// SR-12744: Pullback generation crash for unhandled indirect result.
// May be due to inconsistent derivative function type calculation logic in
// `VJPEmitter::createEmptyPullback`.

import _Differentiation

class Class: Differentiable {
@differentiable(wrt: (self, x))
@differentiable(wrt: x)
func f(_ x: Float) -> Float { x }
}

func test<C: Class>(_ c: C, _ x: Float) {
_ = gradient(at: c, x) { c, x in c.f(x) }
_ = gradient(at: x) { x in c.f(x) }
}