On Tue, Jul 2, 2019 at 11:23 AM Tom Lane <tgl@sss.pgh.pa.us> wrote: > Rui Hai Jiang <ruihaij@gmail.com> writes: > > I think I found an issue in the TopoSort() function. > > This indeed seems like a live bug introduced by a1c1af2a. > Robert?
This is pretty thoroughly swapped out of my head, but it looks like that analysis might be correct.
Is it practical to come up with a test case that demonstrates the problem?