Fix backend crash in parsing incorrect tsquery.

Per report from Jon Rosebaugh <jon@inklesspen.com>

diff --git a/contrib/tsearch2/query.c b/contrib/tsearch2/query.c
index 902ee22fe545201c085867c82393e4c57dc5ec2b..ea8790df25b5ec85d74dcd210799e73959fb255d 100644 (file)
--- a/contrib/tsearch2/query.c
+++ b/contrib/tsearch2/query.c
@@ -159,12 +159,14 @@ gettoken_query(QPRS_STATE * state, int4 *val, int4 *lenval, char **strval, int2
                                        (state->buf)++;         /* can safely ++, t_iseq guarantee
                                                                                 * that pg_mblen()==1 */
                                        *val = (int4) '!';
+                                       state->state = WAITOPERAND;
                                        return OPR;
                                }
                                else if (t_iseq(state->buf, '('))
                                {
                                        state->count++;
                                        (state->buf)++;
+                                       state->state = WAITOPERAND;
                                        return OPEN;
                                }
                                else if (t_iseq(state->buf, ':'))