725b43b9c3
Commit eba77534 fixed an amcheck false positive bug involving inconsistencies in TOAST input state between table and index. A test case was added that verified that such an inconsistency didn't result in a spurious corruption related error. Test coverage from the test was accidentally lost by commit 501e41dd, which propagated ALTER TABLE ... SET STORAGE attstorage state to indexes. This broke the test because the test specifically relied on attstorage not being propagated. This artificially forced there to be index tuples whose datums were equivalent to the datums in the heap without the datums actually being bitwise equal. Fix this by updating pg_attribute directly instead. Commit 501e41dd made similar changes to a test_decoding TOAST-related test case which made the same assumption, but overlooked the amcheck test case. Backpatch: 11-, just like commit eba77534 (and commit 501e41dd).
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