This one is 100% repeatable and independent of POCL_CACHE_DIR, POCL_DEBUG,
and POCL_VECTORIZER_REMARKS.

export POCL_DEBUG_LLVM_PASSES=1

In first call to clBuildProgram:

  WmResidentPatchProcessor::WmResidentPatchProcessor(WmComputeProgram*,
boost::shared_ptr<WmComputeAssignment const>,
std::vector<boost::shared_ptr<WmSubDomain const>,
std::allocator<boost::shared_ptr<WmSubDomain const> > > const&,
WmComputeMachine&)@wmresidentpatchprocessor.cc:358
  [email protected]:37
  compile_and_link_program@pocl_build.c:624
  pocl_llvm_build_program@pocl_llvm_build.cc:195
  InitializeLLVM()@pocl_llvm_utils.cc:371
ATP Stack walkback for Rank 46 done
Process died with signal 11: 'Segmentation fault'
Forcing core dumps of ranks 46, 0

Any ideas to try?
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