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authorTom Lane <tgl@sss.pgh.pa.us>2016-01-02 16:24:50 -0500
committerTom Lane <tgl@sss.pgh.pa.us>2016-01-02 16:24:59 -0500
commit701303590053e100aa3a4ea87ac498d7fe00243f (patch)
tree98853889ed566a7aea5bae3796274eb722a96d6c /src/backend/access/gist/gistvacuum.c
parent9200e5664405600ab0bf588a8ff48621682b9fa2 (diff)
downloadpostgresql-701303590053e100aa3a4ea87ac498d7fe00243f.tar.gz
postgresql-701303590053e100aa3a4ea87ac498d7fe00243f.zip
Fix overly-strict assertions in spgtextproc.c.
spg_text_inner_consistent is capable of reconstructing an empty string to pass down to the next index level; this happens if we have an empty string coming in, no prefix, and a dummy node label. (In practice, what is needed to trigger that is insertion of a whole bunch of empty-string values.) Then, we will arrive at the next level with in->level == 0 and a non-NULL (but zero length) in->reconstructedValue, which is valid but the Assert tests weren't expecting it. Per report from Andreas Seltenreich. This has no impact in non-Assert builds, so should not be a problem in production, but back-patch to all affected branches anyway. In passing, remove a couple of useless variable initializations and shorten the code by not duplicating DatumGetPointer() calls.
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