An example of substituability test that is recursive
john.r.rose at oracle.com
Thu Jan 31 18:05:33 UTC 2019
On Jan 31, 2019, at 6:34 AM, forax at univ-mlv.fr wrote:
> The other solution is to say that == should do an upcall to equals (after the null checking and the class checking), if equals throw a StackOverflow, it's the expected behavior because the user is in control of that behavior.
What you are doing here, I think, is exposing a requirement
that we *don't* use the control stack for recursion on subst.
testing (or hashing). That's a reasonable requirement.
It leads to a worklist algorithm for doing this tricky thing,
just like we had to do many times in the JIT.
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