[clang] [clang][bytecode] Fix null ptr upcasts adding offset (PR #224873)

Wed Sep 23 00:01:26 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `flang-aarch64-latest-gcc` running on `linaro-flang-aarch64-latest-gcc` while building `clang` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/130/builds/21708

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
...
      |      ^~~~~
tools/flang/include/flang/Optimizer/HLFIR/HLFIROps.cpp.inc: In static member function ‘static hlfir::SumOp hlfir::SumOp::create(mlir::ImplicitLocOpBuilder&, mlir::TypeRange, mlir::ValueRange, llvm::ArrayRef<mlir::NamedAttribute>)’:
tools/flang/include/flang/Optimizer/HLFIR/HLFIROps.cpp.inc:19221:16: warning: ‘static hlfir::SumOp hlfir::SumOp::create(mlir::OpBuilder&, mlir::Location, mlir::TypeRange, mlir::ValueRange, llvm::ArrayRef<mlir::NamedAttribute>)’ is deprecated: use the overload taking Properties and discardableAttributes instead [-Wdeprecated-declarations]
19221 |   return create(builder, builder.getLoc(), std::forward<decltype(resultTypes)>(resultTypes), std::forward<decltype(operands)>(operands), std::forward<decltype(attributes)>(attributes));
      |          ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/flang/include/flang/Optimizer/HLFIR/HLFIROps.cpp.inc:19212:7: note: declared here
19212 | SumOp SumOp::create(::mlir::OpBuilder &builder, ::mlir::Location location, ::mlir::TypeRange resultTypes, ::mlir::ValueRange operands, ::llvm::ArrayRef<::mlir::NamedAttribute> attributes) {
      |       ^~~~~
1164.251 [720/2/7731] Building CXX object tools/flang/lib/Optimizer/HLFIR/Transforms/CMakeFiles/HLFIRTransforms.dir/BufferizeHLFIR.cpp.o
1164.921 [720/1/7732] Linking CXX shared library lib/libFIRDialect.so.24.0git
FAILED: lib/libFIRDialect.so.24.0git 
: && /usr/local/bin/c++ -fPIC -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Wno-deprecated-copy -Wno-ctad-maybe-unsupported -fno-semantic-interposition -O3 -DNDEBUG -fno-semantic-interposition  -Wl,-z,defs -Wl,-z,nodelete -Wl,-z,pack-relative-relocs   -Wl,-rpath-link,/home/tcwg-buildbot/worker/flang-aarch64-latest-gcc/build/./lib  -Wl,--gc-sections -shared -Wl,-soname,libFIRDialect.so.24.0git -o lib/libFIRDialect.so.24.0git tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/CUDAKernelOpInterface.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIRAttr.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIRBoxUtils.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIRDialect.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIROperationMoveOpInterface.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIROps.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIRType.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FirAliasTagOpInterface.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FortranVariableInterface.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/Inliner.cpp.o tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/SafeTempArrayCopyAttrInterface.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:\$ORIGIN/../lib/aarch64-unknown-linux-gnu:/home/tcwg-buildbot/worker/flang-aarch64-latest-gcc/build/lib:"  lib/libCUFAttrs.so.24.0git  lib/libFIRDialectSupport.so.24.0git  lib/libMLIRBuiltinToLLVMIRTranslation.so.24.0git  lib/libMLIROpenMPToLLVM.so.24.0git  lib/libMLIRLLVMToLLVMIRTranslation.so.24.0git  lib/libMLIROpenACCUtils.so.24.0git  lib/libMLIROpenACCDialect.so.24.0git  lib/libMLIRSCFUtils.so.24.0git  lib/libMLIRAffineAnalysis.so.24.0git  lib/libMLIRGPUDialect.so.24.0git  lib/libMLIRMathDialect.so.24.0git  lib/libLLVMAsmPrinter.so.24.0git  lib/libMLIRFuncToLLVM.so.24.0git  lib/libMLIRArithToLLVM.so.24.0git  lib/libMLIRArithAttrToLLVMConversion.so.24.0git  lib/libMLIRArithTransforms.so.24.0git  lib/libMLIRBufferizationTransforms.so.24.0git  lib/libMLIRSCFDialect.so.24.0git  lib/libMLIRBufferizationDialect.so.24.0git  lib/libMLIRSparseTensorDialect.so.24.0git  lib/libMLIRFuncTransforms.so.24.0git  lib/libMLIRShardingInterface.so.24.0git  lib/libMLIRShardDialect.so.24.0git  lib/libMLIRVectorDialect.so.24.0git  lib/libMLIRTensorDialect.so.24.0git  lib/libMLIRParallelCombiningOpInterface.so.24.0git  lib/libMLIRIndexingMapOpInterface.so.24.0git  lib/libMLIRMaskableOpInterface.so.24.0git  lib/libMLIRMaskingOpInterface.so.24.0git  lib/libMLIRVectorInterfaces.so.24.0git  lib/libMLIRControlFlowToLLVM.so.24.0git  lib/libMLIRControlFlowDialect.so.24.0git  lib/libMLIRMemRefToLLVM.so.24.0git  lib/libMLIRLLVMCommonConversion.so.24.0git  lib/libMLIRMemRefUtils.so.24.0git  lib/libMLIRAffineDialect.so.24.0git  lib/libMLIRMemRefDialect.so.24.0git  lib/libMLIRArithUtils.so.24.0git  lib/libMLIRComplexDialect.so.24.0git  lib/libMLIRMemorySlotUtils.so.24.0git  lib/libMLIRTargetLLVMIRExport.so.24.0git  lib/libMLIRDLTIDialect.so.24.0git  lib/libMLIRLLVMIRTransforms.so.24.0git  lib/libMLIROpenMPDialect.so.24.0git  lib/libMLIROpenACCMPCommon.so.24.0git  lib/libMLIRArithDialect.so.24.0git  lib/libMLIRCastInterfaces.so.24.0git  lib/libMLIRDialect.so.24.0git  lib/libMLIRInferIntRangeCommon.so.24.0git  lib/libMLIRShapedOpInterfaces.so.24.0git  lib/l
OpInterface.so.24.0git  lib/libMLIRValueBoundsOpInterface.so.24.0git  lib/libMLIRDestinationStyleOpInterface.so.24.0git  lib/libMLIRRewrite.so.24.0git  lib/libMLIRRewritePDL.so.24.0git  lib/libMLIRPDLToPDLInterp.so.24.0git  lib/libMLIRPDLInterpDialect.so.24.0git  lib/libMLIRPDLDialect.so.24.0git  lib/libMLIRMemOpInterfaces.so.24.0git  lib/libMLIRRuntimeVerifiableOpInterface.so.24.0git  lib/libMLIRPass.so.24.0git  lib/libMLIRAnalysis.so.24.0git  lib/libMLIRInferIntDivisibilityOpInterface.so.24.0git  lib/libMLIRDialectUtils.so.24.0git  lib/libMLIRInferStridedMetadataInterface.so.24.0git  lib/libMLIRViewLikeInterface.so.24.0git  lib/libMLIRLoopLikeInterface.so.24.0git  lib/libMLIRPresburger.so.24.0git  lib/libMLIRFuncDialect.so.24.0git  lib/libMLIRTranslateLib.so.24.0git  lib/libMLIRParser.so.24.0git  lib/libMLIRBytecodeReader.so.24.0git  lib/libMLIRAsmParser.so.24.0git  lib/libLLVMFrontendOpenMP.so.24.0git  lib/libLLVMTransformUtils.so.24.0git  lib/libLLVMAnalysis.so.24.0git  lib/libLLVMAsmParser.so.24.0git  lib/libMLIRLLVMDialect.so.24.0git  lib/libMLIRInferIntRangeInterface.so.24.0git  lib/libMLIRInferTypeOpInterface.so.24.0git  lib/libMLIRDataLayoutInterfaces.so.24.0git  lib/libMLIRControlFlowInterfaces.so.24.0git  lib/libMLIRFunctionInterfaces.so.24.0git  lib/libMLIRSideEffectInterfaces.so.24.0git  lib/libMLIRCallInterfaces.so.24.0git  lib/libMLIRMemorySlotInterfaces.so.24.0git  lib/libMLIRPtrMemorySpaceInterfaces.so.24.0git  lib/libMLIRIR.so.24.0git  lib/libMLIRSupport.so.24.0git  lib/libLLVMCore.so.24.0git  lib/libLLVMRemarks.so.24.0git  lib/libLLVMBinaryFormat.so.24.0git  lib/libLLVMTargetParser.so.24.0git  lib/libLLVMSupport.so.24.0git  -Wl,-rpath-link,/home/tcwg-buildbot/worker/flang-aarch64-latest-gcc/build/lib && :
/usr/bin/ld: warning: -z pack-relative-relocs ignored
/usr/bin/ld: tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIROps.cpp.o: in function `_ZN3fir12FirOpBuilder23notifyOperationInsertedEPN4mlir9OperationENS1_9OpBuilder11InsertPointE':
FIROps.cpp:(.text._ZN3fir12FirOpBuilder23notifyOperationInsertedEPN4mlir9OperationENS1_9OpBuilder11InsertPointE[_ZN3fir12FirOpBuilder23notifyOperationInsertedEPN4mlir9OperationENS1_9OpBuilder11InsertPointE]+0x8): undefined reference to `_ZNK3fir12FirOpBuilder19setCommonAttributesEPN4mlir9OperationE'
/usr/bin/ld: tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIROps.cpp.o: in function `_ZN4mlir12RewriterBase18ForwardingListener23notifyOperationInsertedEPNS_9OperationENS_9OpBuilder11InsertPointE':
FIROps.cpp:(.text._ZN4mlir12RewriterBase18ForwardingListener23notifyOperationInsertedEPNS_9OperationENS_9OpBuilder11InsertPointE[_ZN4mlir12RewriterBase18ForwardingListener23notifyOperationInsertedEPNS_9OperationENS_9OpBuilder11InsertPointE]+0x88): undefined reference to `_ZNK3fir12FirOpBuilder19setCommonAttributesEPN4mlir9OperationE'
/usr/bin/ld: tools/flang/lib/Optimizer/Dialect/CMakeFiles/FIRDialect.dir/FIROps.cpp.o: in function `_ZN4mlir9OpBuilder12createOrFoldIN3fir9ConvertOpEJNS_4TypeENS_5ValueEEEEvRN4llvm15SmallVectorImplIS5_EENS_8LocationEDpOT0_':
FIROps.cpp:(.text._ZN4mlir9OpBuilder12createOrFoldIN3fir9ConvertOpEJNS_4TypeENS_5ValueEEEEvRN4llvm15SmallVectorImplIS5_EENS_8LocationEDpOT0_[_ZN4mlir9OpBuilder12createOrFoldIN3fir9ConvertOpEJNS_4TypeENS_5ValueEEEEvRN4llvm15SmallVectorImplIS5_EENS_8LocationEDpOT0_]+0x29c): undefined reference to `_ZNK3fir12FirOpBuilder19setCommonAttributesEPN4mlir9OperationE'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/224873