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5ad63eee13
Attempting to use this function with a raw page not coming from a GiST index would cause a crash, as it was missing the same sanity checks as gist_page_items_bytea(). This slightly refactors the code so as all the basic validation checks for GiST pages are done in a single routine, in the same fashion as the pageinspect functions for hash and BRIN. This fixes an issue similar to 076f4d9. A test is added to stress for this case. While on it, I have added a similar test for brin_page_items() with a combination make of a valid GiST index and a raw btree page. This one was already protected, but it was not tested. Reported-by: Egor Chindyaskin Author: Dmitry Koval Discussion: https://postgr.es/m/17815-fc4a2d3b74705703@postgresql.org Backpatch-through: 14