[all-commits] [llvm/llvm-project] 510ef0: [NSan] Fix null-pointer crash on unsupported vecto...

[Maosu Zhao via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 510ef079ffdd60a912ebf23911621944af757ac6
      https://github.com/llvm/llvm-project/commit/510ef079ffdd60a912ebf23911621944af757ac6
  Author: Maosu Zhao <maosu.zhao at intel.com>
  Date:   2026-06-23 (Tue, 23 Jun 2026)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/NumericalStabilitySanitizer.cpp
    M llvm/test/Instrumentation/NumericalStabilitySanitizer/non_float_store.ll

  Log Message:
  -----------
  [NSan] Fix null-pointer crash on unsupported vector element sizes (#202270)

In propagateNonFTStore, BitcastTy is left null when a ConstantDataVector
has an element width other than 32/64/80 bits (e.g., f16, bf16, fp128).
Passing a null element type into VectorType::get crashes. Guard the
VectorType::get call so the unsupported case falls through to the "reset
shadow to unknown" path.

---------

Co-authored-by: Alexander Shaposhnikov <ashaposhnikov at google.com>



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