[all-commits] [llvm/llvm-project] 6b0f35: Fix signal during the call to checkOpenMPLoop.

[jyu2-git via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6b0f35931a44b0fbd27297f83087d3a4c352e83f
      https://github.com/llvm/llvm-project/commit/6b0f35931a44b0fbd27297f83087d3a4c352e83f
  Author: Jennifer Yu <jennifer.yu at intel.com>
  Date:   2021-08-05 (Thu, 05 Aug 2021)

  Changed paths:
    M clang/lib/Sema/SemaOpenMP.cpp
    M clang/test/OpenMP/teams_distribute_loop_messages.cpp

  Log Message:
  -----------
  Fix signal during the call to checkOpenMPLoop.

The root problem is a null pointer is accessed during the call to
checkOpenMPLoop, because loop up bound expr is an error expression
due to error diagnostic was emit early.

To fix this, in setLCDeclAndLB, setUB and setStep instead return false,
return true when LB, UB or Step contains Error, so that the checking is
stopped in checkOpenMPLoop.

Differential Revision: https://reviews.llvm.org/D107385