pgsql: Assert that pre/post-fix updated tuples are on the same page dur

Assert that pre/post-fix updated tuples are on the same page during replay.

If they were not 'oldtup.t_data' would be dereferenced while set to NULL
in case of a full page image for block 0.

Do so primarily to silence coverity; but also to make sure this prerequisite
isn't changed without adapting the replay routine as that would appear to
work in many cases.

Andres Freund

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/1460b199e6e748712253fa130d1c3368ba6ac861

Modified Files
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src/backend/access/heap/heapam.c |    2 ++
1 file changed, 2 insertions(+)