Trying to remove a loop edge makes stinger go into an infinite loop

[rohitvarkey]

using StingerWrapper
s = Stinger()
insert_edge!(s, 0, 1, 1, 0, 0)
remove_edge!(s, 0, 1, 1) #Goes into infinite loop

The C definition of remove_edge! does have a note specifying how this function should not be called concurrently with the same source.

@jpfairbanks Does this case come under that condition? I guess we should add a check for this at the wrapper side (in remove_edge) in any case.

If we are not able to allow for deletion of loop edges, should we allow such an edge to be inserted in insert_edge! in the first place?

[jpfairbanks]

I think the consensus is that self edges are not supported by stinger. So the julia side should just check on insertion and deletion to prevent calling into stinger when src==dst.