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-rw-r--r--contrib/ltree/ltxtquery_io.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/contrib/ltree/ltxtquery_io.c b/contrib/ltree/ltxtquery_io.c
index 6c9a63d5dbb..b87d05c0440 100644
--- a/contrib/ltree/ltxtquery_io.c
+++ b/contrib/ltree/ltxtquery_io.c
@@ -234,8 +234,8 @@ makepol(QPRS_STATE * state)
case OPEN:
if (makepol(state) == ERR)
return ERR;
- if (lenstack && (stack[lenstack - 1] == (int4) '&' ||
- stack[lenstack - 1] == (int4) '!'))
+ while (lenstack && (stack[lenstack - 1] == (int4) '&' ||
+ stack[lenstack - 1] == (int4) '!'))
{
lenstack--;
pushquery(state, OPR, stack[lenstack], 0, 0, 0);