yonghong-song added a comment.

Sorry, I know what is the segfault now after some debugging. It is because 
`auto *Fn = dyn_cast<llvm::Function>(LV.getPointer(*this));` is a NULL pointer 
after there is a definition before this. Will pose another patch but with test 
case remains to cover mix of declaration, pointer reference and definition.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100567/new/

https://reviews.llvm.org/D100567

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