[pgpool-committers: 5431] pgpool: Fix corner case bug with strip_quote().

[Tatsuo Ishii]

Fix corner case bug with strip_quote().

strip_quote(), which is called by pattern_compare() did not properly
handle empty query string case. In the worst case it could wipe out
memory after a pointer returned from malloc(), which could cause a
segmentation fault in free() called in pattern_compare().

Per bug 458.

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=0e7d3f16f24ca51358a1ef0bb50805d521000440

Modified Files
--------------
src/utils/pool_select_walker.c | 28 ++++++++++++++++++++++++++--
1 file changed, 26 insertions(+), 2 deletions(-)