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5c0a20003b
This fixes an unlikely issue when fetching GROUPING SET results from their internally stored hash tables. It was possible in rare cases that the hash iterator would be set up incorrectly which could result in a crash. This was introduced in 4d143509c, so backpatch to v18. Many thanks to Yuri Zamyatin for reporting and helping to debug this issue. Bug: #19078 Reported-by: Yuri Zamyatin <yuri@yrz.am> Author: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Jeff Davis <pgsql@j-davis.com> Discussion: https://postgr.es/m/19078-dfd62f840a2c0766@postgresql.org Backpatch-through: 18