Fix possible buffer overrun in contrib/pg_trgm. Allow for the possibility that folding a string to lower case makes it longer (due to replacing a character with a longer multibyte character). This doesn't change the number of trigrams that will be extracted, but it does affect the required size of an intermediate buffer in generate_trgm(). Per bug #8821 from Ufuk Kayserilioglu.
Also install some checks that the input string length is not so large as to cause overflow in the calculations of palloc request sizes. Back-patch to all supported versions. Branch ------ REL8_4_STABLE Details ------- http://git.postgresql.org/pg/commitdiff/72cce2c7806dbe872176d5af929b7f280f144d48 Modified Files -------------- contrib/pg_trgm/trgm_op.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
