GitLab

A tag (struct, class, union or enum) is free-standing if its declaration
is not immediately used as part of a type of a field or variable.  See
also clang::TagDecl::isFreeStanding method.  Example of a
non-free-standing struct:
  struct NonFreeStandingStructCanHaveAName {
    int some_field;
  }* ptr_to_the_non_free_standing_struct;

After this CL, the rewriter will avoid rewriting pointers to
non-free-standing structs, because 1) such structs are relatively rare
and 2) such structs are difficult to rewrite correctly (essentially the
definition of the struct has to be used as a template argument of
CheckedPtr).

Bug: 1069567
Change-Id: Ib571344594795334be90bef5350a467d5841d96d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2173575
Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#768963}