On 2015-05-28 20:14:33 +0000, Gaetano Mendola wrote: > src/backend/commands/explain.c:1692 > src/backend/commands/explain.c:1874 > src/backend/commands/explain.c:1986 > > there is the following assignment: > > ancestors = list_delete_first(ancestors); > > but it has no effect at all being that a function parameter and not used > anymore after the assignment itself.
So? It costs little to nothing, and it'll make it much less likely that a stale version of 'ancestors' is used when the code is expanded.
