| // RUN: not %target-swift-frontend -disable-availability-checking -emit-sil -verify %s |
| // REQUIRES: asserts |
| |
| // SR-12656: Differentiation transform crashes for original function with opaque |
| // result type. |
| // |
| // If supporting this is non-trivial, we could reject earlier during Sema. |
| |
| import _Differentiation |
| |
| @differentiable |
| func opaqueResult(_ x: Float) -> some Differentiable { x } |
| |
| // swift: swift/lib/SILOptimizer/Differentiation/PullbackEmitter.cpp:244: void swift::autodiff::PullbackEmitter::addAdjointValue(swift::SILBasicBlock *, swift::SILValue, swift::autodiff::AdjointValue, swift::SILLocation): Assertion `newAdjointValue.getType() == getRemappedTangentType(originalValue->getType())' failed. |
| // Stack dump: |
| // ... |
| // 1. Swift version 5.3-dev (LLVM f66b332548, Swift 05c47da664) |
| // 2. While evaluating request ExecuteSILPipelineRequest(Run pipelines { Guaranteed Passes } on SIL for main.main) |
| // 3. While running pass #15 SILModuleTransform "Differentiation". |
| // 4. While processing // differentiability witness for opaqueResult(_:) |
| // sil_differentiability_witness hidden [parameters 0] [results 0] @$s4main12opaqueResultyQrSfF : $@convention(thin) (Float) -> @out @_opaqueReturnTypeOf("$s4main12opaqueResultyQrSfF", 0) 🦸 { |
| // } |
| // on SIL function "@$s4main12opaqueResultyQrSfF". |
| // for 'opaqueResult(_:)' (at swift/test/AutoDiff/compiler_crashers/sr12656-differentiation-opaque-result-type.swift:13:1) |
| // 5. While generating VJP for SIL function "@$s4main12opaqueResultyQrSfF". |
| // for 'opaqueResult(_:)' (at swift/test/AutoDiff/compiler_crashers/sr12656-differentiation-opaque-result-type.swift:13:1) |
| // 6. While generating pullback for SIL function "@$s4main12opaqueResultyQrSfF". |
| // for 'opaqueResult(_:)' (at swift/test/AutoDiff/compiler_crashers/sr12656-differentiation-opaque-result-type.swift:13:1) |
