[all-commits] [llvm/llvm-project] c196e2: [PowerPC] Clear the set of symbols that need to be...

[Nemanja Ivanovic via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c196e2ca48b739cae7d83e1ee0136f426f60aa53
      https://github.com/llvm/llvm-project/commit/c196e2ca48b739cae7d83e1ee0136f426f60aa53
  Author: Nemanja Ivanovic <nemanja.i.ibm at gmail.com>
  Date:   2020-04-15 (Wed, 15 Apr 2020)

  Changed paths:
    M llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp

  Log Message:
  -----------
  [PowerPC] Clear the set of symbols that need to be updated in MCTargetStreamer

We have added code to correct the .localentry values on assignments. However, we
never clear the set so presumably it will still contain the (now dangling)
MCSymbol pointers across a call to finish() and reset() in the streamer.

This is based on my speculation that it is the reason we are getting
segmentation faults mentioned in https://bugs.llvm.org/show_bug.cgi?id=45366

Fixes: https://bugs.llvm.org/show_bug.cgi?id=45366

Differential revision: https://reviews.llvm.org/D78196