[PATCH] D41575: [index] Return when DC is null in handleReference

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

HighCommander4 narrowed it down https://github.com/jacobdufault/cquery/issues/219#issuecomment-354903152  to a much simpler reproduce:

  c++
  template <typename>
  struct actor;
  
  template <template <typename> class Actor = actor>
  struct terminal;

This may trigger null pointer dereference of `DC` (because it calls `cast`). If the default template argument is removed, the crash goes away.


Repository:
  rC Clang

https://reviews.llvm.org/D41575