rjmccall added a comment.
In D58514#1429758 <https://reviews.llvm.org/D58514#1429758>, @wuhao5 wrote:
> > Can I ask why you want a weak reference to a block in the first place? It
> > seems basically useless — blocks can certainly appear in reference cycles,
> > but I don't know why you'd ever try to break that cycle with the block
> > instead of somewhere else.
>
> The simplified version:
>
> auto b = ^{
>
> if (check) {
> dispatch_after(queue, 1, b);
> } else {
> // done.
> }
>
> };
> dispatch_after(queue, 1, b);
Okay, so really just a block self-reference. We could really just add a
feature for that that would avoid both the complexity and the expense of the
self-capture dance.
Repository:
rC Clang
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D58514/new/
https://reviews.llvm.org/D58514
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