Thread: pgsql: Add amcheck missing downlink tests.

Add amcheck missing downlink tests.

Also use palloc0() for main amcheck state, and adjust a few comments.

Somehow I pushed old version of patch in commit
4eaf7eaccb291f5d32d9f05284bfca9c5744de9a, so commit the difference.

Peter Geoghegan

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f35f30f74b6abb0a2f47c91c20df606cf166e8ff

Modified Files
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contrib/amcheck/expected/check_btree.out | 23 ++++++++++++++++++++++-
contrib/amcheck/sql/check_btree.sql      | 20 +++++++++++++++++++-
contrib/amcheck/verify_nbtree.c          | 14 ++++++++------
3 files changed, 49 insertions(+), 8 deletions(-)