• Michael Lippautz's avatar
    cppgc: Check for correct base class inheritance · 143e6a74
    Michael Lippautz authored
    The only valid way to define a GCed type T is by inheriting from
    GarbageCollected<T>. Since this is prone to typos (see tests), add a
    simple check that covers most interesting use cases.
    
    The static assert covers
      A -> B -> GarbageCollected<C>
    
    The static assert does not cover
     A -> B -> C -> GarbageCollected<B>
    
    (In order to do so, we would need __direct_bases() support which is
    not yet available for C++.)
    
    Bug: pdfium:1670, chromium:1056170
    Change-Id: I494de48992f8ba9a1f0f9daad60584d828717403
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2810415Reviewed-by: 's avatarOmer Katz <omerkatz@chromium.org>
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#73854}
    143e6a74
allocation.h 8.08 KB