[all-commits] [llvm/llvm-project] 0d1881: Fix GH57943: Friend constraint checker didn't hand...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0d18815baf6dffa682b0966f311041cfc7d8ff6d
      https://github.com/llvm/llvm-project/commit/0d18815baf6dffa682b0966f311041cfc7d8ff6d
  Author: Erich Keane <erich.keane at intel.com>
  Date:   2022-09-23 (Fri, 23 Sep 2022)

  Changed paths:
    M clang/lib/Sema/SemaTemplate.cpp
    A clang/test/SemaTemplate/gh57943.cpp

  Log Message:
  -----------
  Fix GH57943: Friend constraint checker didn't handle null decls.

Apparently TransformDecl in TreeTransform can be called with a nullptr
for a Decl, so my casts were illegal.  The fix here is to add an early
exit to my TransformDecl.