[all-commits] [llvm/llvm-project] 8f768e: [Clang] Fix crash when visting a fold expression i...

[Shafik Yaghmour via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f768ec00592009cda496c8f7bfeef013887b5f3
      https://github.com/llvm/llvm-project/commit/8f768ec00592009cda496c8f7bfeef013887b5f3
  Author: Shafik Yaghmour <shafik at users.noreply.github.com>
  Date:   2023-09-28 (Thu, 28 Sep 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/test/SemaTemplate/cxx1z-fold-expressions.cpp

  Log Message:
  -----------
  [Clang] Fix crash when visting a fold expression in a default argument (#67514)

CheckDefaultArgumentVisitor::Visit(...) assumes that the children of
Expr will not be NULL. This is not a valid assumption and when we have a
CXXFoldExpr the children can be NULL and this causes a crash.

Fixes: https://github.com/llvm/llvm-project/issues/67395