pgsql: Fix integer overflow in text_format function, reported by Dean R - Mailing list pgsql-committers

Fix integer overflow in text_format function, reported by Dean Rasheed.

In the passing, clarify the comment on why text_format_nv wrapper is needed.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/34be83b7e142a718c7a831c9df9763aa83fe4cd5

Modified Files
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src/backend/utils/adt/varlena.c |   27 ++++++++++++++++++++++-----
1 files changed, 22 insertions(+), 5 deletions(-)