On Tue, Sep 21, 2021 at 07:42:48PM +0000, jfondren via Digitalmars-d-learn
wrote:
> On Monday, 13 September 2021 at 17:18:30 UTC, eugene wrote:
> > I do not understand at all why GC considers those sg0 and sg1 as
> > unreferenced.
> > And why old gdc (without -Os) and old ldc do not.
>
> Conclusion:
>
> There's nothing special about sg0 and sg1, except that they're part of
> Stopper. The Stopper in main() is collected before the end of main()
> because it's not used later in the function and because there are
> apparently no other references to it that the GC can find (because the
> only reference is hidden inside the Linux epoll API).
Quick and dirty workaround: keep references to those objects in static
variables to prevent GC collection:
auto myFunc(...) {
static MyType* dontCollect = null;
MyType* obj = new MyObject(...);
dontCollect = obj;
scope(exit) dontCollect = null; // may collect after function
exits
... // function body goes here
}
T
--
Verbing weirds language. -- Calvin (& Hobbes)
