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StevengreStevengre
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add a test to show case
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‎kmir/src/tests/integration/data/exec-smir/pointers/pointer-cast-zst.rs‎

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struct Wrapper(u32);
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fn roundtrip(ptr: *const Wrapper) -> u32 {
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unsafe {
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let erased = ptr as *const ();
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let restored = erased as *const Wrapper;
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(*restored).0
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}
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}
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fn main() {
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let value = Wrapper(0xCAFE_BABE);
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assert!(roundtrip(&value) == 0xCAFE_BABE);
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}

‎kmir/src/tests/integration/data/exec-smir/pointers/pointer-cast-zst.smir.json‎

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‎kmir/src/tests/integration/data/exec-smir/pointers/pointer-cast-zst.state‎

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<kmir>
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<k>
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PtrLocal ( 1 , place (... local: local ( 1 ) , projection: projectionElemField ( fieldIdx ( 0 ) , ty ( 29 ) ) .ProjectionElems ) , mutabilityNot , metadata ( noMetadataSize , 0 , noMetadataSize ) ) ~> #freezer#setLocalValue(_,_)_RT-DATA_KItem_Place_Evaluation1_ ( place (... local: local ( 2 ) , projection: .ProjectionElems ) ~> .K ) ~> #execStmts ( statement (... kind: statementKindAssign (... place: place (... local: local ( 3 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindPtrToPtr , operandCopy ( place (... local: local ( 2 ) , projection: .ProjectionElems ) ) , ty ( 26 ) ) ) , span: span ( 52 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 4 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindPtrToPtr , operandCopy ( place (... local: local ( 3 ) , projection: .ProjectionElems ) ) , ty ( 25 ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 5 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindTransmute , operandCopy ( place (... local: local ( 4 ) , projection: .ProjectionElems ) ) , ty ( 27 ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 6 ) , projection: .ProjectionElems ) , rvalue: rvalueNullaryOp ( nullOpAlignOf , ty ( 28 ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 7 ) , projection: .ProjectionElems ) , rvalue: rvalueBinaryOp ( binOpSub , operandCopy ( place (... local: local ( 6 ) , projection: .ProjectionElems ) ) , operandConstant ( constOperand (... span: span ( 50 ) , userTy: noUserTypeAnnotationIndex , const: mirConst (... kind: constantKindAllocated ( allocation (... bytes: b"\x01\x00\x00\x00\x00\x00\x00\x00" , provenance: provenanceMap (... ptrs: .ProvenanceMapEntries ) , align: align ( 8 ) , mutability: mutabilityMut ) ) , ty: ty ( 27 ) , id: mirConstId ( 9 ) ) ) ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 8 ) , projection: .ProjectionElems ) , rvalue: rvalueBinaryOp ( binOpBitAnd , operandCopy ( place (... local: local ( 5 ) , projection: .ProjectionElems ) ) , operandCopy ( place (... local: local ( 7 ) , projection: .ProjectionElems ) ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 9 ) , projection: .ProjectionElems ) , rvalue: rvalueBinaryOp ( binOpEq , operandCopy ( place (... local: local ( 8 ) , projection: .ProjectionElems ) ) , operandConstant ( constOperand (... span: span ( 50 ) , userTy: noUserTypeAnnotationIndex , const: mirConst (... kind: constantKindAllocated ( allocation (... bytes: b"\x00\x00\x00\x00\x00\x00\x00\x00" , provenance: provenanceMap (... ptrs: .ProvenanceMapEntries ) , align: align ( 8 ) , mutability: mutabilityMut ) ) , ty: ty ( 27 ) , id: mirConstId ( 10 ) ) ) ) ) ) , span: span ( 50 ) ) .Statements ) ~> #execTerminator ( terminator (... kind: assert (... cond: operandCopy ( place (... local: local ( 9 ) , projection: .ProjectionElems ) ) , expected: true , msg: assertMessageMisalignedPointerDereference (... required: operandCopy ( place (... local: local ( 6 ) , projection: .ProjectionElems ) ) , found: operandCopy ( place (... local: local ( 5 ) , projection: .ProjectionElems ) ) ) , target: basicBlockIdx ( 1 ) , unwind: unwindActionUnreachable ) , span: span ( 50 ) ) ) ~> .K
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</k>
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<retVal>
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noReturn
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</retVal>
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<currentFunc>
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ty ( 31 )
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</currentFunc>
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<currentFrame>
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<currentBody>
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ListItem ( basicBlock (... statements: statement (... kind: statementKindAssign (... place: place (... local: local ( 2 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindPtrToPtr , operandCopy ( place (... local: local ( 1 ) , projection: .ProjectionElems ) ) , ty ( 25 ) ) ) , span: span ( 51 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 3 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindPtrToPtr , operandCopy ( place (... local: local ( 2 ) , projection: .ProjectionElems ) ) , ty ( 26 ) ) ) , span: span ( 52 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 4 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindPtrToPtr , operandCopy ( place (... local: local ( 3 ) , projection: .ProjectionElems ) ) , ty ( 25 ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 5 ) , projection: .ProjectionElems ) , rvalue: rvalueCast ( castKindTransmute , operandCopy ( place (... local: local ( 4 ) , projection: .ProjectionElems ) ) , ty ( 27 ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 6 ) , projection: .ProjectionElems ) , rvalue: rvalueNullaryOp ( nullOpAlignOf , ty ( 28 ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 7 ) , projection: .ProjectionElems ) , rvalue: rvalueBinaryOp ( binOpSub , operandCopy ( place (... local: local ( 6 ) , projection: .ProjectionElems ) ) , operandConstant ( constOperand (... span: span ( 50 ) , userTy: noUserTypeAnnotationIndex , const: mirConst (... kind: constantKindAllocated ( allocation (... bytes: b"\x01\x00\x00\x00\x00\x00\x00\x00" , provenance: provenanceMap (... ptrs: .ProvenanceMapEntries ) , align: align ( 8 ) , mutability: mutabilityMut ) ) , ty: ty ( 27 ) , id: mirConstId ( 9 ) ) ) ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 8 ) , projection: .ProjectionElems ) , rvalue: rvalueBinaryOp ( binOpBitAnd , operandCopy ( place (... local: local ( 5 ) , projection: .ProjectionElems ) ) , operandCopy ( place (... local: local ( 7 ) , projection: .ProjectionElems ) ) ) ) , span: span ( 50 ) ) statement (... kind: statementKindAssign (... place: place (... local: local ( 9 ) , projection: .ProjectionElems ) , rvalue: rvalueBinaryOp ( binOpEq , operandCopy ( place (... local: local ( 8 ) , projection: .ProjectionElems ) ) , operandConstant ( constOperand (... span: span ( 50 ) , userTy: noUserTypeAnnotationIndex , const: mirConst (... kind: constantKindAllocated ( allocation (... bytes: b"\x00\x00\x00\x00\x00\x00\x00\x00" , provenance: provenanceMap (... ptrs: .ProvenanceMapEntries ) , align: align ( 8 ) , mutability: mutabilityMut ) ) , ty: ty ( 27 ) , id: mirConstId ( 10 ) ) ) ) ) ) , span: span ( 50 ) ) .Statements , terminator: terminator (... kind: assert (... cond: operandCopy ( place (... local: local ( 9 ) , projection: .ProjectionElems ) ) , expected: true , msg: assertMessageMisalignedPointerDereference (... required: operandCopy ( place (... local: local ( 6 ) , projection: .ProjectionElems ) ) , found: operandCopy ( place (... local: local ( 5 ) , projection: .ProjectionElems ) ) ) , target: basicBlockIdx ( 1 ) , unwind: unwindActionUnreachable ) , span: span ( 50 ) ) ) )
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ListItem ( basicBlock (... statements: statement (... kind: statementKindAssign (... place: place (... local: local ( 0 ) , projection: .ProjectionElems ) , rvalue: rvalueUse ( operandCopy ( place (... local: local ( 3 ) , projection: projectionElemDeref projectionElemField ( fieldIdx ( 0 ) , ty ( 29 ) ) .ProjectionElems ) ) ) ) , span: span ( 50 ) ) .Statements , terminator: terminator (... kind: terminatorKindReturn , span: span ( 53 ) ) ) )
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</currentBody>
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<caller>
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ty ( -1 )
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</caller>
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<dest>
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place (... local: local ( 2 ) , projection: .ProjectionElems )
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</dest>
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<target>
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someBasicBlockIdx ( basicBlockIdx ( 1 ) )
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</target>
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<unwind>
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unwindActionContinue
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</unwind>
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<locals>
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ListItem ( newLocal ( ty ( 29 ) , mutabilityMut ) )
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ListItem ( typedValue ( PtrLocal ( 1 , place (... local: local ( 1 ) , projection: .ProjectionElems ) , mutabilityNot , metadata ( noMetadataSize , 0 , noMetadataSize ) ) , ty ( 26 ) , mutabilityNot ) )
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ListItem ( newLocal ( ty ( 25 ) , mutabilityNot ) )
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ListItem ( newLocal ( ty ( 26 ) , mutabilityNot ) )
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ListItem ( newLocal ( ty ( 25 ) , mutabilityMut ) )
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ListItem ( newLocal ( ty ( 27 ) , mutabilityMut ) )
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ListItem ( newLocal ( ty ( 27 ) , mutabilityMut ) )
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ListItem ( newLocal ( ty ( 27 ) , mutabilityMut ) )
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ListItem ( newLocal ( ty ( 27 ) , mutabilityMut ) )
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ListItem ( newLocal ( ty ( 30 ) , mutabilityMut ) )
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</locals>
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</currentFrame>
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<stack>
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ListItem ( StackFrame ( ty ( -1 ) , place (... local: local ( 0 ) , projection: .ProjectionElems ) , noBasicBlockIdx , unwindActionContinue , ListItem ( newLocal ( ty ( 1 ) , mutabilityMut ) )
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ListItem ( typedValue ( Aggregate ( variantIdx ( 0 ) , ListItem ( Integer ( 3405691582 , 32 , false ) ) ) , ty ( 28 ) , mutabilityNot ) )
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ListItem ( newLocal ( ty ( 29 ) , mutabilityMut ) )
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ListItem ( typedValue ( Moved , ty ( 26 ) , mutabilityMut ) )
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ListItem ( typedValue ( Reference ( 0 , place (... local: local ( 1 ) , projection: .ProjectionElems ) , mutabilityNot , metadata ( noMetadataSize , 0 , noMetadataSize ) ) , ty ( 34 ) , mutabilityNot ) )
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ListItem ( newLocal ( ty ( 35 ) , mutabilityMut ) ) ) )
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ListItem ( StackFrame ( ty ( -1 ) , place (... local: local ( -1 ) , projection: .ProjectionElems ) , noBasicBlockIdx , unwindActionUnreachable , .List ) )
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</stack>
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</kmir>

‎kmir/src/tests/integration/test_integration.py‎

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Original file line numberDiff line numberDiff line change
@@ -262,6 +262,12 @@ def test_crate_examples(main_crate: Path, kmir: KMIR, update_expected_output: bo
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EXEC_DATA_DIR / 'pointers' / 'pointer-cast-length-test-fail.state',
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1000,
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),
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(
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'pointer-cast-zst',
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EXEC_DATA_DIR / 'pointers' / 'pointer-cast-zst.smir.json',
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EXEC_DATA_DIR / 'pointers' / 'pointer-cast-zst.state',
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48,
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),
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(
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'ref-ptr-cases',
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EXEC_DATA_DIR / 'pointers' / 'ref_ptr_cases.smir.json',

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