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-rw-r--r--contrib/ltree/ltxtquery_io.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/contrib/ltree/ltxtquery_io.c b/contrib/ltree/ltxtquery_io.c
index 13ea58df3f5..d0e4b7f7e22 100644
--- a/contrib/ltree/ltxtquery_io.c
+++ b/contrib/ltree/ltxtquery_io.c
@@ -420,6 +420,9 @@ while( ( (inf)->cur - (inf)->buf ) + (addsize) + 1 >= (inf)->buflen ) \
static void
infix(INFIX *in, bool first)
{
+ /* since this function recurses, it could be driven to stack overflow. */
+ check_stack_depth();
+
if (in->curpol->type == VAL)
{
char *op = in->op + in->curpol->distance;